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Question 9.EX.4: Write the structure function corresponding to the following:......

Write the structure function corresponding to the following:

9.44
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(a) \phi(x)=x_1 \max \left(x_2, x_3, x_4\right) x_5.
(b) \phi(x)=x_1 \max \left(x_2 x_4, x_3 x_5\right) x_6.
(c) \phi(x)=\max \left(x_1, x_2 x_3\right) x_4.

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