V x (A(x, y, z)▼B(x, y, z)) = VB × VA where A and B are differentiable scalar functions of x, y, and z. You can look in a table of vector calculus identities and check easily enough whether my assertion is true. But don't just cite the table. Instead, do one (1) of the following: • Derive the identity for arbitrary functions A and B (thus proving my assertion true). • Derive some different identity for V x (AVB) (thus proving my assertion false). • Give me functions A and B for which my assertion does not hold. You don't have to do more than one of those things. Just one (1) will suffice.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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V x (A(x, y, z)VB(x,y, z)) = VB × VA
where A and B are differentiable scalar functions of x, y, and z.
You can look in a table of vector calculus identities and check easily enough whether my assertion
is true. But don't just cite the table. Instead, do one (1) of the following:
• Derive the identity for arbitrary functions A and B (thus proving my assertion true).
• Derive some different identity for V x (AVB) (thus proving my assertion false).
• Give me functions A and B for which my assertion does not hold.
You don't have to do more than one of those things. Just one (1) will suffice.
Transcribed Image Text:V x (A(x, y, z)VB(x,y, z)) = VB × VA where A and B are differentiable scalar functions of x, y, and z. You can look in a table of vector calculus identities and check easily enough whether my assertion is true. But don't just cite the table. Instead, do one (1) of the following: • Derive the identity for arbitrary functions A and B (thus proving my assertion true). • Derive some different identity for V x (AVB) (thus proving my assertion false). • Give me functions A and B for which my assertion does not hold. You don't have to do more than one of those things. Just one (1) will suffice.
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