Computer plot graphs of sn u, cn u, and dn u, for several values of k, say, for example, $\mathit{k}\mathbf{=}\frac{\mathbf{1}}{\mathbf{4}}\mathbf{,}\frac{\mathbf{1}}{\mathbf{2}}\mathbf{,}\frac{\mathbf{3}}{\mathbf{4}}\mathbf{,}\mathbf{0}\mathbf{.}\mathbf{9}\mathbf{,}\mathbf{0}\mathbf{.}\mathbf{99}\mathbf{.}$.Also plot 3D graphs of sn, cn, and dn as functions of u and k.

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