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

1 Answer
Steve M
Oct 27, 2016

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

Explanation:

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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