" 5."int_(0)^(3)(x^(2)+1)dx

int_(0)^(1)(3x^(2)+5x)dx

int_(0)^(3)(2x^(2)+3x+5)dx

int_(0)^(3)(2x^(2)+3x+5)dx

int_(0)^(3)2x^(2)-5dx

int_(1)^(3)5x^(2)dx

int_(1)^(3)5x^(2)dx

" 2."int_(0)^(1)(x^2)/(1+x^(3))dx

show that (a) int_(0) ^(2pi) sin ^(3) x dx = 0 , (b) int_(-1)^(1) e^(-x^(2)) dx = 2 int_(0)^(1) e^(-x^(2)) dx

int_(0)^(2)(3x^(2)+2x-1)dx=

int_(0)^(1)(1)/((2x+5))dx