5.4 Indefinite Integrals and the Net Change Theorem/9

Failed to parse (syntax error): {\displaystyle f(x) &= x^2 \\[2ex] &= x^3 + (x+1)^3 \\[2ex] &= \int_{1}^{5}f(x)\,dx \\[2ex] &= \left(\frac{1}{x^2}\right) }