(4) Suppose z = f(x, y) where f is differentiable (both f, and fy exist). In addition, suppose = g(t) and y=h(t), and I= dz Find when t-3. dt g(3) = 2, g'(3) = 5, fr(2,7)=6, h(3) = 7, h'(3) = −4, fy(2, 7) = −8.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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(4) Suppose \( z = f(x, y) \) where \( f \) is differentiable (both \( f_x \) and \( f_y \) exist). In addition, suppose \( x = g(t) \) and \( y = h(t) \), and

\[
g(3) = 2, \quad h(3) = 7,
\]
\[
g'(3) = 5, \quad h'(3) = -4,
\]
\[
f_x(2, 7) = 6, \quad f_y(2, 7) = 8.
\]

Find \(\frac{dz}{dt}\) when \( t = 3 \).
Transcribed Image Text:(4) Suppose \( z = f(x, y) \) where \( f \) is differentiable (both \( f_x \) and \( f_y \) exist). In addition, suppose \( x = g(t) \) and \( y = h(t) \), and \[ g(3) = 2, \quad h(3) = 7, \] \[ g'(3) = 5, \quad h'(3) = -4, \] \[ f_x(2, 7) = 6, \quad f_y(2, 7) = 8. \] Find \(\frac{dz}{dt}\) when \( t = 3 \).
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