int_(1)^(2) 6/t^4 dt

Evaluate. int_(pi)^(pi) (sin(x))^(3) (cos(x))^(3) dx

\int_{-\infty}^\infty {1 \over (4+x^4)} ,dx

int_(-2)^2sqrt(4-x^2)text()dx evaluate the integral

\int_{4}^{13} f(x) \,dx - \int_{4}^{11} f(x) \,dx = \int_{a}^{b} f(x) \,dx where a= and b= .

Let \displaystyle \int_{5}^{9.5} f(x) dx =4, \ \int_{5}^{6.5} f(x) dx=5, \ \int_{8}^{9.5} f(x)dx =8

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