The Total solution for NCERT class 6-12
Answer - 21 : -
A. tan x +cot x + C
B. tan x +cosec x + C
C. −tan x + cot x + C
D. tan x +sec x + C
Answer - 22 : -
Hence, the correct answeris A.
A. −cot (exx)+ C
B. tan(xex)+ C
C. tan(ex)+ C
D. cot (ex) + C
Answer - 23 : -
Let exx = t
Hence, the correct answeris B.