# How do you solve #u^4 = 1#?

In essence, our equation is a difference of squares, which is expressed as

We can solve by setting both of these to zero in order to obtain

Consequently, our solutions are

I hope this is useful.

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Given

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Answer below

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To solve the equation ( u^4 = 1 ), you can take the fourth root of both sides. This gives you ( u = \pm 1 ). Therefore, the solutions to the equation are ( u = 1 ) and ( u = -1 ).

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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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