I. Let z = f( x,y) = xy² Find the equation of the tangent when x = 1, y = 2 Find the equation of the linear approximation to f at (1,2) Find the equation of the tangent to f(x,y) = 4 at (1,2) Compute the total differential df. Find df at (1,2)
I. Let z = f( x,y) = xy² Find the equation of the tangent when x = 1, y = 2 Find the equation of the linear approximation to f at (1,2) Find the equation of the tangent to f(x,y) = 4 at (1,2) Compute the total differential df. Find df at (1,2)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![**Problem Statement:**
Given the function \( z = f(x, y) = xy^2 \), perform the following tasks:
1. **Find the equation of the tangent** when \( x = 1 \) and \( y = 2 \).
2. **Find the equation of the linear approximation** to \( f \) at the point (1, 2).
3. **Find the equation of the tangent** to \( f(x, y) = 4 \) at (1, 2).
4. **Compute the total differential \( df \)** and find \( df \) at (1, 2).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F755912d2-06fe-4895-89a3-a52af6bba3a5%2Ff7552775-6d9e-4e26-8e00-311ef35705f9%2F8ese1qn_processed.png&w=3840&q=75)
Transcribed Image Text:**Problem Statement:**
Given the function \( z = f(x, y) = xy^2 \), perform the following tasks:
1. **Find the equation of the tangent** when \( x = 1 \) and \( y = 2 \).
2. **Find the equation of the linear approximation** to \( f \) at the point (1, 2).
3. **Find the equation of the tangent** to \( f(x, y) = 4 \) at (1, 2).
4. **Compute the total differential \( df \)** and find \( df \) at (1, 2).
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