Fourier series: Coefficients of Fourier series
Piecewise continuous and smooth functions
Consider the piecewise defined real function \[f(x)=\begin{cases}\displaystyle {{50}\over{8 x -42}}+1 &\text{if }\displaystyle x\lt5\\ \\ \displaystyle 3 x ^2+x+2 &\text{if }\displaystyle 5\le x\lt7\\\\\displaystyle \sqrt{5 x -25} &\text{if } \displaystyle x\ge7 \end{cases} \]
Evaluate \(f(-1)\).
Evaluate \(f(-1)\).
| \(f(-1)=\) |
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