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Question

If y=1az, find dzdy

A
(az)2
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B
(za)2
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C
(z+a)2
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D
(z+a)2
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Solution

The correct option is A (az)2
y=(1az)
Let az=t

dtdz=1
y=1t

dydt=1t2

dydz=dydt×dtdz

=1t2.1

=1t2

dzdy=t2

=(az)2

dzdy=(az)2.

Hence the answer is (az)2.

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