Find the value. 11) If F(x, y) = -9x+4y, find Fx(-4,-9) and Fy(-4,-4), xy A) Ex(-4,-9) = 1, Fy(-4,-9) = - C) Fx(-4,-9) ==, Fy(-4,-9) = - = —,
Find the value. 11) If F(x, y) = -9x+4y, find Fx(-4,-9) and Fy(-4,-4), xy A) Ex(-4,-9) = 1, Fy(-4,-9) = - C) Fx(-4,-9) ==, Fy(-4,-9) = - = —,
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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Question
Number 11 i need help on.
Transcribed Image Text:D) fxx(x, y) = 168x2(x2 + y2,5 + 14(x2 + y2
fyy(x, y) = 168y2(x2 + y2j5+ 146x2 + y2
fxy(x, y) = fyx(x, y) = 168xy(x2 + y25+14x2
Find the value.
-9x + 4y, find Fx(-4,-9) and Fy(-4-9)
xy
A) Fx(-4, -9) = —, Fy(-4, -9) = -—
C) Fx(-4,-9) =, Fy(-4,-9) ---
11) If F(x, y) =
Solve the problem.
12) Evaluate
dw
dt
at t= 3r for the function w(x, y)=x²
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