# Show that #f# has at least one root in #RR# ?

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Given #f:RR->RR# , continuous with #f(a)+f(b)+f(c)=0# , #a,b,c# #in# #RR#

Given

Check below.

I now understand.

We have two options:

At least one of the two numbers should be the opposite of the other.

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See below.

will be accurate, if not

will suggest that

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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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