# If #f(x) = x^2 + 3x# and #g(x) = 4x - 1#, what is #(f@g)(0)#?

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To find $(f@g)(0)$, first find $f(g(0))$.

$g(0) = 4(0) - 1 = -1$

Then, find $f(-1)$:

$f(-1) = (-1)^2 + 3(-1) = 1 - 3 = -2$

So, $(f@g)(0) = -2$.

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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.

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.

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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