Fourier series: Coefficients of Fourier series
Piecewise continuous and smooth functions
Consider the piecewise defined real function \[f(x)=\begin{cases}\displaystyle 2-{{10}\over{7 x -15}} &\text{if }\displaystyle x\lt2\\ \\ \displaystyle \sqrt{{{9 x }\over{2}}-9} &\text{if }\displaystyle 2\le x\lt5\\\\\displaystyle 2 x -5 &\text{if } \displaystyle x\ge5 \end{cases} \]
Evaluate \(f(4)\).
Evaluate \(f(4)\).
| \(f(4)=\) |
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