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ehrenfest
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[SOLVED] TI-89 integral
My TI-89 says that
[tex]\int \frac{1}{\cos x} dx = \ln \left(\frac{-\cos(x)}{\sin(x)-1}\right)[/tex]
which is just wrong isn't it??!
See http://en.wikipedia.org/wiki/Lists_of_integrals
Homework Statement
My TI-89 says that
[tex]\int \frac{1}{\cos x} dx = \ln \left(\frac{-\cos(x)}{\sin(x)-1}\right)[/tex]
which is just wrong isn't it??!
See http://en.wikipedia.org/wiki/Lists_of_integrals
Homework Equations
The Attempt at a Solution
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