( 3.5 ) ( _ 0.2 [x] d x ) is equal to

Step-by-step solution

Given that, _ 0.2 ^ 3.5 [x] d x= _ 0.2 ¹ 0 d x+ ₁² 1 . d x+ ₂³ 2 . d x+ ₃^ 3.5 3 d x=0+1[x]₁²+2[x]₂³+3[x]₃^ 3.5 =0+1(2-1)+2(3-2)+3(3.5-3)=0+1+2+1.5=4.5