06-25-2019, 05:50 PM
(This post was last modified: 06-25-2019, 05:57 PM by MrBossmanJr.)
Is the answer -1/2?
I think you have to use L'Hospitals Rule.
f(0) = (cosx-1)/(xsinx)
so the denominator is basically 0*0 or x*x at this point which is x^2
cosx-1 can be written as -1+cosx or -(1-cosx)
Then you apply the rule and do the derivative of top and bottom
the top becomes -sinx and the bottom is 2x
the x's cancel and become 1's therefore being -1/2?
I think you have to use L'Hospitals Rule.
f(0) = (cosx-1)/(xsinx)
so the denominator is basically 0*0 or x*x at this point which is x^2
cosx-1 can be written as -1+cosx or -(1-cosx)
Then you apply the rule and do the derivative of top and bottom
the top becomes -sinx and the bottom is 2x
the x's cancel and become 1's therefore being -1/2?
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