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(Solved): please help, both a and b 3. Suppose \( z=f(x, y)=\frac{x^{2}}{y+1}, x=\cos t, y=\sin t \), and cons ...
please help, both a and b
3. Suppose \( z=f(x, y)=\frac{x^{2}}{y+1}, x=\cos t, y=\sin t \), and consider the point when \( t=\pi \). a. Use the multivariable chain rule to compute \( \frac{d z}{d t} \) b. Evaluate \( \frac{d z}{d t} \) at \( t=\pi \).