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Math Help - sinh(x)

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    sinh(x)

    How come sinh (x) is increasing?
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    Quote Originally Posted by tsal15 View Post
    How come sinh (x) is increasing?
    Its derivative is cosh(x), which is positive for all x.

    Since the derivative is always positive, that means that all tangents on sinh(x) have positive gradient, and so sinh(x) is increasing over all x.
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    Quote Originally Posted by Prove It View Post
    Its derivative is cosh(x), which is positive for all x.

    Since the derivative is always positive, that means that all tangents on sinh(x) have positive gradient, and so sinh(x) is increasing over all x.

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