Math, asked by muhir06, 1 year ago

3^n÷(-3^n) please solve​

Answers

Answered by GENIUS1223
1
Answer will be -1
..............
Answered by shadowsabers03
0

\frac{3^n}{(-3)^n}=-1,\ $if$\ n\ $is odd$. \\ \\ \\ \frac{3^n}{(-3)^n}=1,\ $if$\ n\ $is even.

$$E.g.: Let$\ n=1. \\ \\ \frac{3^n}{(-3)^n}=\frac{3^1}{(-3)^1}=\frac{3}{(-3)}=-1 \\ \\ \\ $Let$\ n=2. \\ \\ \frac{3^n}{(-3)^n}=\frac{3^2}{(-3)^2}=\frac{9}{9}=1 \\ \\

\bold{Reason:} \\ \\ \\ $Let$\ n=2k-1,\ \ $such that$\ n\ $is odd.$ \\ \\ \frac{3^n}{(-3)^n}=\frac{3^{2k-1}}{(-3)^{2k-1}}=\frac{3^{2k} \div 3}{(-3)^{2k} \div (-3)}=\frac{9^k \times \frac{1}{3}}{9^k \times \frac{1}{-3}}=\frac{\frac{1}{3}}{\frac{1}{-3}} \\ \\ = \frac{1}{3} \div \frac{1}{-3}=\frac{1}{3}\times-3=\frac{-3}{3}=-1

$$Let$\ n=2k,\ \ $such that$\ n\ $is even.$ \\ \\ \frac{3^n}{(-3)^n}=\frac{3^{2k}}{(-3)^{2k}}=\frac{9^k}{9^k}=1

$$That's all! \\ \\ Hope this helps. \\ \\ Please ask me if any doubts. \\ \\ Also please mark it as the brainliest. \\ \\ \\ Thank you. :-)

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