Question

Evaluate the integral :

Answer 1

Answer:

plz see the attached solution... hope it helps..

Answer 2

Answer:

Ans.  :    0

Explanation:  

 0                  π/2

= ∫ sinx dx  +    ∫ sinx dx

-π/2             0  

By integrating we get,

             0                                        π/2

= [-cosx]                         +    [-cosx]  

             -π/2                                   0

= [ - cos(0) + cos ( -π/2) ]   + [ -cos (π/2) + cos(0) ]

Putting the values of cos(0) and cos (π/2), we get

= -1 + 0 - 0 + 1

= 0    ans.