Given that f(r, y, 2) = }2 + }y – 322 – 5xyz. Calculate: (a) f.. (b) f., (c) f., (d) f.. Given that u(z, y) = 3r² + kry – 2y². Find k if u„ + u, + u, = 0: %3D

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Given that f(r, y, z) = r² + }y² – 32² – 5xyz. Calculate:
(a) f.,
(b) f.,
(c) f.,
(d) f..
Given that u(r, y) = 3x² + kry – 2y². Find k if u, + u, + u, = 0:
Transcribed Image Text:Given that f(r, y, z) = r² + }y² – 32² – 5xyz. Calculate: (a) f., (b) f., (c) f., (d) f.. Given that u(r, y) = 3x² + kry – 2y². Find k if u, + u, + u, = 0:
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