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How do you graph #y=-cosx-1#?

Answer 1

Anna Andrews

graph{-cosx -1 [-5, 5, -2.5, 2.5]}

It is important to learn what the graphs of #y=sinx# and #y=cosx# look like;

The graph of #y=cosx# is as follows; graph{cosx [-5, 5, -2.5, 2.5]}

So, the graph of #y=-cosx# is the above graph inverted graph{-cosx [-5, 5, -2.5, 2.5]}

And, the graph of #y=-cosx-1# is the above graph translated 1 unit down graph{-cosx -1 [-5, 5, -2.5, 2.5]}

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Answer from HIX Tutor

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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