Suppose that is a twice-differentiable function of r, that r = x 2 + y 2
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Suppose that ƒ is a twice-differentiable function of r, that r = √x2 + y2 + z2, and that
Show that for some constants a and b,
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fxx + fyy + f₂z = 0.
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Related Book For
Thomas Calculus Early Transcendentals
ISBN: 9780321884077
13th Edition
Authors: Joel R Hass, Christopher E Heil, Maurice D Weir
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