1. \int x\cos(3x)dx 2. \int xe^{2x}dx Evaluate the indefinite integral. \int xdx Evaluate the indefinite integral. \int 77\cos^2(68x)dx Evaluate the indefinite integral: \int \frac {4x}{(x+1)(x-2)} dx Evaluate the indefinite integral: \int (sec^2 x + 1)\ dx. Evaluate...