Question
3.36 Find the gradient of the following scalar functions: \text { (a) } T=3 /\left(x^{2}+z^{2}\right) \text { (b) } V=\pi y^{2} z^{4} \text { (c) } U=z \cos \phi r\left(1+r^{2}\right)
\text { (d) } W=e^{-R} \sin \theta \text { (e) } S=4 x^{2} e^{-z}+y^{3} \text { (T) } N=r^{2} \cos ^{2} \phi \text { (g) } M=R \cos \theta \sin \phi
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