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- Exercise 2.8 (Solutions) @fsc-part1-ptb:sol:ch02
- e 2.8: Textbook of Algebra and Trigonometry Class XI (Mathematics FSc Part 1 or HSSC-I), Punjab Textbo... questions: (i) Name the identity element if it exists? (ii) What is the inverse of 1? (iii) Is th... t{3}b \in G$ where $a$ & $b$ are rational, there exit rationals $– a$ & $-b$ such that \begin{align} ... inverse of $a+\sqrt{3}b$ is $(-a)+\sqrt{3}(-b)$, exists in $G$. (v) For $a+\sqrt{3}b$, $c+\sqrt{3}d \
- Exercise 1.1 (Solutions) @fsc-part1-ptb:sol:ch01
- e 1.1: Textbook of Algebra and Trigonometry Class XI (Mathematics FSc Part 1 or HSSC-I), Punjab Textbo... **Property:** Right distributive property. ---- (xi) $4 \times (5 \times 8)= (4 \times 5)\times 8$ *... :** Associative property w.r.t. '$\times$'. ---- (xii) $a(b+c-d)= ab+ac-ad$ **Property:** Left distr... e 1.1: Textbook of Algebra and Trigonometry Class XI.\\ Punjab Textbook Board, Lahore - PAKISTAN. \\ [
- Exercise 1.2 (Solutions) @fsc-part1-ptb:sol:ch01
- e 1.2: Textbook of Algebra and Trigonometry Class XI (Mathematics FSc Part 1 or HSSC-I), Punjab Textbo... ber\] - Additive Identity \[z+0=z\nonumber \] - Existence of Additive Inverse \[\begin{array}{l} \mbox{For each} \; z\in \mathbb{C}, \mbox{there exists}\; -z\in \mathbb{C} \mbox{ such that}\; z+\lef