How do you find #w(a+4)# given #w(a)=a+3#?

Answer 1

Hazel Anglin

w(a + 4) = (a + 4) + 3

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Answer 2

Eva Abramson

See the solution process below:

To solve this problem substitute #color(red)(a + 4)# for each occurrence of #color(red)(a)# in the function #w(a)#

#w(color(red)(a)) = color(red)(a) + 3# becomes:

#w(color(red)(a + 4)) = color(red)(a + 4) + 3#

#w(color(red)(a + 4)) = a + 7#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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