[All Steps] Find D(f compfn; T)(1,0) where f: R^2 \rightarrow R is defined by f(u, v)= cos (u) sin (v) and T: R^2 \rightarrow R^2 by T(s, t)=(cos (t^2 s),


Question: Find \(\mathrm{D}(f \circ T)(1,0)\) where \(f: \mathbb{R}^{2} \rightarrow \mathbb{R}\) is defined by \(f(u, v)=\cos (u) \sin (v)\) and \(T: \mathbb{R}^{2} \rightarrow \mathbb{R}^{2}\) by \(T(s, t)=\left(\cos \left(t^{2} s\right), \log \left(\sqrt{1+s^{2}}\right)\right) .\) Find \(\frac{\partial(f \circ T)}{\partial s}(0,1)\) and verify that

\[\frac{\partial(f \circ T)}{\partial s}(1,0)=\frac{\partial f}{\partial u}(1,0) \frac{\partial T_{1}}{\partial s}(0,1)+\frac{\partial f}{\partial v}(1,0) \frac{\partial T_{2}}{\partial s}(0,1)\]

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