`int_(-1/7)^(20/7)e^(5x)dx`

If I_(n)=int_(0)^(1)x^(n)e^(-x)dx for n in N, then I_(7)-I_(6)=

int(7^(5x+9))dx

int(3-5x)^(7)dx=?

int(3 -7x)^(5) dx

4.The value of int_(1)^(2(1)/(7))(1)/(x(2x^(7)+1))dx

If int_(-2)^(5) f(x) dx = 4 and int_(0)^(5) {1+f(x)}dx = 7 , then what is int_(-2)^(0) f(x) dx equal to ?

int((5x+7)/(x)+e^(x)) dx

"int(1)/((2x+9)^(5/7))dx

int(e^(5x)-1)/(e^(2x))dx

int(1)/(3x^(2)+7)dx