`int_1^4 (3x^2) dx`

int_1^4 3x^2dx

Evaluate the following integrals : int_1^4(3x^2+2x)dx

int_1^2 (3x^2+1)dx =

int_1^3 (3x^2+1)dx =

IfI_1=int_0^1 2^(x^2)dx ,I_2=int_0^1 2^(x^3)dx ,I_3=int_1^2 2^(x^2)dx ,I_4=int_1^2 2^(x^3)dx , then which of the following is/are true?

int1/(x^4+3x^2+9)dx

Evaluate int_1^4 f(x)dx , where f(x)=|x-1|+|x-2|+|x-3|

Evaluate int_1^4 f(x)dx, where f(x)= |x-1|+|x-2|+|x-3|.

1/4 int_(-1)^0 (x+2)dx-1/4 int_-1^0 x^2 dx

Evaluate : int_1^2 (5x^2)/(x^2+4x+3) dx