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Calculus problem

  • 19-09-2014 8:38pm
    #1
    LumberJack71
    Registered Users, Registered Users 2 Posts: 5 ✭


    If I have dy/dx=5xcos(x^2) and x=1(measured in radians) do I have to put x=1 5(1) in radians and cos(1^2) in degrees to get the slope of the line?


Comments

  • #2
    TheBody
    Registered Users, Registered Users 2 Posts: 5,633 ✭✭✭TheBody


    If x=1 is measured in radians then you should use radians to find the [latex]\cos(x^2)[/latex] bit too.


  • #3
    bnt
    Registered Users, Registered Users 2 Posts: 13,073 ✭✭✭✭bnt


    As long as you're doing Calculus, stick with Radians - that's the only way the relations work. There's a decent explanation of the reasons here.

    You are the type of what the age is searching for, and what it is afraid it has found. I am so glad that you have never done anything, never carved a statue, or painted a picture, or produced anything outside of yourself! Life has been your art. You have set yourself to music. Your days are your sonnets.

    ―Oscar Wilde predicting Social Media, in The Picture of Dorian Gray



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