Definite integrals are integrals which have limits (upper and lower) and can be evaluated to give a definite answer. \[= \left[ {\frac{{ - 1}}{3}\cos (3x + \frac{\pi ...

To calculate the area between a curve and the \(x\)-axis we must evaluate using definite integrals. First, we need to find out where the curve cuts the \(x\)-axis. Remember, a curve cuts the ...