dy Find at (x, y) = (3, 4) and z? = a²+y² if d = x² + y? if 1 аnd 2 6. dt

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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Find \(\frac{dz}{dt}\) at \((x, y) = (3, 4)\) and \(z^2 = x^2 + y^2\) if \(\frac{dx}{dt} = 1\) and \(\frac{dy}{dt} = 2\).
Transcribed Image Text:Find \(\frac{dz}{dt}\) at \((x, y) = (3, 4)\) and \(z^2 = x^2 + y^2\) if \(\frac{dx}{dt} = 1\) and \(\frac{dy}{dt} = 2\).
Expert Solution
Step 1

Given z2=x2+y2, (x, y)=(3, 4), dxdt=1, dydt=2.

When x=3, y=4,

z2=32+42   =9+16   =25

z=5

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