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sinh and cosh

  • 03-05-2010 9:54pm
    #1
    davey101
    Registered Users, Registered Users 2 Posts: 290 ✭✭


    Folks,
    I have a quick question, Are the sinh and cosh derivatives in the new maths tables? Cause for the life of me i cant find them.

    thanks
    Tagged:


Comments

  • #2
    sponsoredwalk
    Registered Users, Registered Users 2 Posts: 3,038 ✭✭✭sponsoredwalk


    to be honest taking derivatives of these things are easy if you just remember they are made up of e's :D

    [latex] y = sinhx = \frac{e^x - e^-^x}{2} = \frac{e^x}{2} - \frac{e^-^x}{2}[/latex]

    [latex] \frac{dy}{dx} = \frac{e^x}{2} + \frac{e^-^x}{2} = \frac{e^x + e^-^x}{2} = coshx [/latex]

    the rest are just composites based an standard trig with a few minuses thrown in for good measure ;)


  • #3
    davey101
    Registered Users, Registered Users 2 Posts: 290 ✭✭davey101


    yeah i did find that in a book but i thought it strange that they were not in the tables.
    Thanks anyway


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