# How do you solve #2cosx-sinx+2cosxsinx=1# in the interval #0<=x<=2pi#?

Squaring, possibly introducing extraneous roots,

We squared an equation so we need to check these.

Final answer:

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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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