Evaluate the function for the given value of x. p(x) = x^2 + 4x, q(x) =√x-7, , (p ∙ q)(x) = ?

👨🏻‍🏫 學術台數學

[匿名]

2016-06-20 7:41 pm

回答 (1)

fooks

2016-06-20 7:53 pm

p(x) = x² + 4x
q(x) = √(x - 7)

(p∘q)(x)
= p(q(x))
= p(√(x - 7))
= [√(x - 7)]² + 4√(x - 7)
= x - 7 + 4√(x - 7)

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