SIMPLE INTEGRATION

The value of \int_{a}^{b}{(x-a)^3 (b-x)^4 dx } is

a)(b-a)464

b) (b-a)8280

c)(b-a)773

d) None Of These

(ans given in book is b)

4 Answers

62
Lokesh Verma ·

\\I=\int_{a}^{b}{(x-a)^3(b-x)^4} \\\text{substituting x-a=t }I=\int_{0}^{b-a}{(t)^3(b-a-t))^4}

Now finish it..?

1
" ____________ ·

2 I = ( b - a ) \int_{a}^{b}{ ( x - a ) ^ 3 ( b- x ) ^ 3}

next let x- a = t

and proceed

1
Avinav Prakash ·

ANS IS ...(B)..

1
" ____________ ·

i think the other method to finish dis of is use of property

\int_{a}^{b}{f(x )} dx= ( b- a) \int_{0}^{1}{f\left(( b-a)x + a \right)}dx

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