The values of a for which, the function $f(x)=a^x$ is increasing on R are given by:
Answer & explanation
Correct answer: option 3
$f(x) =a^x$
so $f'(x)=a^x\log a>0$
$a^x>0$ and $\log a > 0$
so $a>1$
so $1<$ a $<\infty$
The values of a for which, the function $f(x)=a^x$ is increasing on R are given by:
Correct answer: option 3
$f(x) =a^x$
so $f'(x)=a^x\log a>0$
$a^x>0$ and $\log a > 0$
so $a>1$
so $1<$ a $<\infty$