What is the value of 4a cos3 (d2y/dx2) if x = a sin2 (1 + cos2 ) and y – McqOptions

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1.	What is the value of 4a cos3 (d2y/dx2) if x = a sin2 (1 + cos2 ) and y = a cos2 (1 cos2 )?
A.	[1 + (d<sup>2</sup>y/dx<sup>2</sup>)<sup>2</sup>]<sup>3/2</sup>
B.	[1 (d<sup>2</sup>y/dx<sup>2</sup>)<sup>2</sup>]<sup>3/2</sup>
C.	[1 + (d<sup>2</sup>y/dx<sup>2</sup>)<sup>2</sup>]<sup>1/2</sup>
D.	[1 (d<sup>2</sup>y/dx<sup>2</sup>)<sup>2</sup>]<sup>1/2</sup>
Answer» B. [1 (d<sup>2</sup>y/dx<sup>2</sup>)<sup>2</sup>]<sup>3/2</sup>

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