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Olin [163]
3 years ago
7

Use the table for each problem to find the given limits.

Mathematics
1 answer:
asambeis [7]3 years ago
4 0

Answer:

1) \lim_{x \to3  } (2f(x))+g(-x))=13

2) \lim_{x \to3  }\frac{g(x)}{f(-x)}=1/2

Step-by-step explanation:

So we are given the limits:

\lim_{x \to3 }f(x)=4\text{ and }  \lim_{x \to-3 } f(x)=2

And:

\lim_{x \to 3 } g(x)= 1\text{ and }  \lim_{x \to -3 } g(x)=5

Question A)

We have the limit:

\lim_{x \to3  } (2f(x))+g(-x))

We can split this limit using our properties:

= \lim_{x \to 3} (2f(x))+\lim_{x \to 3} g(-x)

Now, use direct substitution. Substitute 3 for x. So:

=2(f(3))+g(-3)

We are given that f(3) (or the limit as x approaches towards 3) is 4.

We know that the limit as x tends towards -3 of g(x) is 5. In other words, g(-3) can be said to be 5. So:

=2(4)+(5)

Multiply:

=8+5=13

So, our limit is:

\lim_{x \to3  } (2f(x))+g(-x))=13

Question B:

We have the limit:

\lim_{x \to3  }\frac{g(x)}{f(-x)}

Again, we can rewrite this as:

\frac{\lim_{x \to3  }g(x)}{\lim_{x \to3  }f(-x)}}

Direct substitution:

=\frac{g(3)}{f(-3)}

The value in the numerator, as given, is 1.

The value in the denominator will be 2. So:

=1/2

Therefore, our limit is:

\lim_{x \to3  }\frac{g(x)}{f(-x)}=1/2

And we're done!

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