Ramesh V
Last Activity: 15 Years ago
Let 5(4x-5) = m2
20 dx = 2m dm
integral {1/103/2 * [( m2-10m+25)1/2 + ( m2+10m+25)1/2] * m} dm with limits from 151/2 to 351/2
= integral {1/103/2 * [2m] * m} dm with limits from 151/2 to 351/2
= integral {1/(5*101/2) * m2} dm with limits from 151/2 to 351/2
= [ 35*351/2 - 15*151/2/(15*101/2)
= [ 7*71/2 - 3*31/2]/(3*21/2)
the final answer is : [ 7*71/2 - 3*31/2]/(3*21/2) which in not in options above
I think the question posted is wrong