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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
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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Number 11 i need help on.
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
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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