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        <title>MathCity.org</title>
        <description>Merging man &amp; maths</description>
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        <item>
            <title>Mathematics 9 (Science Group)</title>
            <link>https://www.mathcity.org/matric/9th_science</link>
            <description>Mathematics 9 (Science Group)


[Mathematics 9 (Science Group)]
Mathematics 9 is written by Dr. Karamat H. Dar and Prof. Irfan-ul-Haq and this book is published by Carvan Book House, Lahore, Pakistan. This book consist of 302 pages and there are 17 units. Notes of Unit 1 and 3 are provided by $ka + kb + kc$$ac + ad + bc + bd$$a^2 + 2ab + b^2$$a^2 – b^2$$a^2 + 2ab + b^2 – c^2$$a^4 + a^2b^2 + b^4$$a^4 + 4b^4$$x^2 + px + q$$ax^2 + bx + c$$(ax^2 + bx + c) (ax2 + bx + d) + k$$(x + a) (x + b) (x + c) …</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Wed, 08 Mar 2023 18:04:36 +0000</pubDate>
        </item>
        <item>
            <title>Mathematics 10 (Science Group)</title>
            <link>https://www.mathcity.org/matric/10th_science</link>
            <description>Mathematics 10 (Science Group)

[Matric Science 10th Book Cover]
The notes/solutions, definitions, MCQs and important question for Mathematics 10 (Science Group), published by Ilmi Kitab Khana, Urdu Bazar, Lahore, Pakistan are available on this page. Whenever we found the notes we will update this page and will upload notes here. If you wish to contribute and send us the notes please contact us via our $(b^2-4ac)$$ax^2+bx+c$$\mathbb{N}$$\mathbb{W}$$\mathbb{Z}$$E$$O$$P$$\mathbb{Q}$$\cup$$\cap$$\s…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Wed, 24 Jul 2024 18:33:10 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 2.1 (Solutions)</title>
            <link>https://www.mathcity.org/matric/9th_science/unit_02/exercise_2.1</link>
            <description>Exercise 2.1 (Solutions)

Question 1

Identify which of the following are rational and irrational numbers:

(i) $\sqrt{3}$	(ii) $\frac{1}{6}$	(iii) $\pi$	(iv) $\frac{15}{2}$	(v) $7.25$	(vi)$\sqrt{29}$

Solution


	*  Rational: $\frac{1}{6}$, $\frac{15}{2}$, $7.25$
	*  Irrational: $\sqrt{3}$, $\pi$, $\sqrt{29}$

Question 2

Convert the following fraction into decimal fraction.$\frac{17}{25}$$\frac{19}{4}$$\frac{57}{8}$$\frac{205}{18}$$\frac{5}{8}$$\frac{25}{38}$$\frac{2}{3}$$\pi$$\frac{1}{9}$$\fr…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 17:00:36 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 6.1</title>
            <link>https://www.mathcity.org/matric/9th_science/ex-6-1</link>
            <description>Exercise 6.1

On the following page we have given the solution of Exercise 6.1 of Mathematics 9 (Science) published by Caravan Book House, Lahore.

We have created this page and it will be updated to add new solutions occasionally. Please stay in touch with this page.$39x^7y^3z$$91x^5y^6 z^7$$102xy^2z$$85x^2yz$$187xyz^2$$39x^7y^3z=13\times 3\times x^7 y^3 z$$91x^5y^6 z^7=13\times 7\times x^5 y^6 z^7$$13 x^5y^3z$$102xy^2z=2\times 3\times 17 xy^2z$$85x^2yz=3\times 17 x^2 y z$$187xyz^2 = 11\times 1…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 16:48:08 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 4.1</title>
            <link>https://www.mathcity.org/matric/9th_science/ex-4-1</link>
            <description>Exercise 4.1

On the following page we have given the solution of Exercise 4.1 of Mathematics 9 (Science) published by Caravan Book House, Lahore.

We have created this page and it will be updated to add new solutions occasionally. Please stay in touch with this page.$3x^2+\frac{1}{x}-5$$3x^3-4x^2-x\sqrt{x}+3$$x^2-3x+\sqrt{2}$$\frac{3x}{2x-1}+8$$3x^2+\frac{1}{x}-5$$No (Reason:\frac{1}{x})$$3x^3-4x^2-x\sqrt{x}+3$$No (Reasons  \sqrt{x})$$x^2-3x+\sqrt{2}$$Yes$$\frac{3x}{2x-1}+8$$No (Reason:\frac{1}…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 16:48:06 +0000</pubDate>
        </item>
        <item>
            <title>Review exercise</title>
            <link>https://www.mathcity.org/matric/9th_science/review_exercise</link>
            <description>Review exercise

On the following page we have given the solution of Review exercise of Mathematics 9 (Science) published by Caravan Book House, Lahore.

We have created this page and it will be updated to add new solutions occasionally. Please stay in touch with this page.$x-2$$x^2+x-6$$x^2+x-6$$x+3$$x-2$$x+2$$c$$a^3+b^3$$a^2-ab+b^2$$a+b$$a^2-ab+b^2$$(a-b)^2$$a^2+b^2$$c$$x^2-5x+6$$x^2-x-6$$x-3$$x+2$$x^2-4$$x-2$$a$$a^2-b^2$$a^3-b^3$$a-b$$a+b$$a^2+ab+b^2$$a^2-ab+b^2$$a$$x^2+3x+2$$x^2+4x+3$$x^2+5x…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 16:48:10 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 2.2 (Solutions)</title>
            <link>https://www.mathcity.org/matric/9th_science/unit_02/exercise_2.2</link>
            <description>Exercise 2.2 (Solutions)

Question 1

Identify the property used in the following,

	*  (i) $a + b = b + a$ ... .....
	*  (ii) $(ab)c = a(bc)$ ... ... ...
	*  (iii) $7 \times 1 = 7$ ... ... ...
	*  (iv) $x &gt; y$ or $x = y$ or $x&lt; y$ ... ... ...	
	*  (v) $ab = ba$ ... ... ...
	*  (vi) $a + c = b + c \Rightarrow a = b$ ... ... ...
	*  (vii) $5 + (-5) = 0$ ... ... ...
	*  (viii) $7 \times \frac{1}{7} = 1$$a &gt; b \Rightarrow ac &gt; bc? (c &gt;0)$$a + b = b + a$$(ab)c = a(bc)$$7 \times 1 = 7$$x &gt; y$$x = y$$…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 17:00:36 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 2.6 (Solutions)</title>
            <link>https://www.mathcity.org/matric/9th_science/unit_02/exercise_2.6</link>
            <description>Exercise 2.6 (Solutions)

Question 1

Identify the following statements as true or false.
(i) $\sqrt{-3}\cdot\sqrt{-3} = 3$

(ii) $i^{73}=-i$

(iii) $i^{10} = -1$

(iv) Complex conjugate of  $(-6i + i^2) is (-1 + 6i)$

(v) Difference of complex numbers $z = a + ib$ and its conjugate is a real number.

(vi) If $(a-1)-(b+3)i = 5+8i$, then a = 6 &amp; b = -11

(vii) Product of complex number and its conjugate is always a non-negative real number.$a+ib$$(2+3i)+(7-2i)$$2(5+4i)+3(7-4i)$$-(-3+5i)-3(4+9i)$$…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 17:00:37 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 6.3</title>
            <link>https://www.mathcity.org/matric/9th_science/ex-6-3</link>
            <description>Exercise 6.3

On the following page we have given the solution of Exercise 6.3 of Mathematics 9 (Science) published by Caravan Book House, Lahore.

We have created this page and it will be updated to add new solutions occasionally. Please stay in touch with this page.$4x^2-12xy +9y^2$$x^2-1+\frac{1}{4x^2}, (x\neq 0)$$\frac{1}{16}x^2-\frac{1}{12}xy+ \frac{1}{36}y^2$$4(a+b)^2-12(a^2-b^2)+9(a-b)^2$$\frac{4x^6-12x^3y^3+9y^6}{9x^4-24x^2y^2+16y^4},(x \neq 0)$$\left( x+\frac{1}{x}\right)^2-4\left( x-\f…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 16:48:09 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 2.3 (Solutions)</title>
            <link>https://www.mathcity.org/matric/9th_science/unit_02/exercise_2.3</link>
            <description>Exercise 2.3 (Solutions)

Question 1

Write each radical expression in exponential notation and each exponential expression in radical notation, Do not simplify.


	* (i) $\sqrt[3]{-64}$	                            *(ii) $2^{35}$
           
				*  (iii) $-7^\frac{1}{3}$                           * (iv) $y^\frac{-2}{3}$$\sqrt[3]{-64} = -64^\frac{1}{3}$$2^\frac{3}{5} = \sqrt[5]{2}^{3}$$-7^\frac{1}{3} = -\sqrt[3]{7}$$y^\frac{-2}{3} = \sqrt[3]{y}^{-2}$$ 5^\frac{1}{5} = \sqrt{5}$$2^\frac{2}{3} = \sq…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 17:00:36 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 2.5 (Solutions)</title>
            <link>https://www.mathcity.org/matric/9th_science/unit_02/exercise_2.5</link>
            <description>Exercise 2.5 (Solutions)

Question 1

	*  Evaluate

           (i) $i^7$			                                  (ii) $i^{50}$
           (iii) $i^{12}$                                                 (iv) $\left(-i\right)^8$
           (v) $\left(-i\right)^5$	                                  (vi)  $i^{27}$

Solution

$$\begin{array}{cl}
i^7 &amp;= {i^6}\cdot i\\
   &amp;= (i^2)^3\cdot i\\
   &amp;= {-1}^3 \cdot i\\
   &amp;= -i
\end{array}$$$$\begin{array}{cl}
i^{50} &amp;= (i^2 )^{25}\\
       &amp;= {-1}^{25}\\
       …</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 17:00:37 +0000</pubDate>
        </item>
        <item>
            <title>Unit 05: Factorization: Online View</title>
            <link>https://www.mathcity.org/matric/9th_science/unit_05/viewer</link>
            <description>Unit 05: Factorization: Online View

On this page, online view of the notes of unit 05 are given. After studying this unit , the students will be able to:

	*  Recall factorization of expressions of the following types.
	*  $ka + kb + kc$
	*  $ac + ad + bc + bd$
	*  $a^2 + 2ab + b^2$
	*  $a^2 – b^2$
	*  $a^2 + 2ab + b^2 – c^2$
	*  Factorize the expressions of the following types.$a^4 + a^2b^2 + b^4$$a^4 + 4b^4$$x^2 + px + q$$ax^2 + bx + c$$(ax^2 + bx + c) (ax2 + bx + d) + k$$(x + a) (x + b) (x +…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Wed, 30 Mar 2022 17:00:19 +0000</pubDate>
        </item>
        <item>
            <title>Exercise 6.2</title>
            <link>https://www.mathcity.org/matric/9th_science/ex-6-2</link>
            <description>Exercise 6.2

On the following page we have given the solution of Exercise 6.2 of Mathematics 9 (Science) published by Caravan Book House, Lahore.

We have created this page and it will be updated to add new solutions occasionally. Please stay in touch with this page.$\frac{x^2-x-6}{x^2-9}+\frac{x^2+2x-24}{x^2-x-12}$\begin{align} \frac{x^2-x-6}{x^2-9}&amp;+\frac{x^2+2x-24}{x^2-x-12}\\
&amp;=\frac{x^2-3x+2x-6}{(x)^2-(3)^2}+\frac{x^2+6x-4x-24}{x^2-4x+3x-12}\\&amp;= \frac{x(x-3)+2(x-3)}{(x-3)(x+3)}+\frac{x(x+6…</description>
            <author>anonymous@undisclosed.example.com (Anonymous)</author>
            <pubDate>Sun, 07 Feb 2021 16:48:08 +0000</pubDate>
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