1.

If int cos xcdot cos 2 x cdot cos 5 x dx =A sin 2 x + B sin 4 x + C sin 6x + D sin 8 x + k (where k is the arbitrary constant of integration), then 1/B + 1/C =

Answer»

`1/A - 1/D`
`1/A+1/D`
1
0

Answer :B


Discussion

No Comment Found

Related InterviewSolutions