try to find f(f(x) but see domain,
method 1 tey to write number of braches for it u will able to find rang
try to find graph projection along y axis will give u range of function..
Which book is it ?
@sneha_2021 try other too
q22 u can diffrenciation method,let me think some other approch also..
for 16 use acosx+bcosx then u may know range ofthis type function
above method is also correct but will take more then 6 to 7 minute to solve..
Pls check i have just tried to solve...comment whether x=9 or not
I have not matched my answer with given option
@sneha_2021 unable to generate that form in q16 , given answer is 3
you will get its correct -1.5,1.5 is answer.