Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Question
Determine which of the following expressions are exact differentials: (a) df = (y + z)dx + (z + y)dy + (x + y)dz (b) df = 2xy dx + 2yz² dy – (1 – x² – 2y²z)dz (c) df =z dx + x dy + y dz (d) df = (x' + 3x³y>z)dx + (y+ 2x'yz)dy + (x'y³)dz
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Transcribed Image Text:Determine which of the following expressions are exact differentials: (a) df = (y + z)dx + (z + y)dy + (x + y)dz (b) df = 2xy dx + 2yz² dy – (1 – x² – 2y²z)dz (c) df =z dx + x dy + y dz (d) df = (x' + 3x³y>z)dx + (y+ 2x'yz)dy + (x'y³)dz
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