5.3 The Fundamental Theorem of Calculus/41

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \int \limits _{0}^{\pi }f(x)dx{\text{where}}/,f(x)={\begin{cases}1&-1\leq x<0\\1-x^{2}&{\text{otherwise}}\end{cases}}}