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algebra
precalculus

what is a natural log?
`No answers available [Answer]` `2005-08-02`	`Chad (MLC Tutor) chad@mathtoearth.org`

algebra
precalculus

I dont understand why the argument of a log has to be positive. Can anyone explain that to me?
`No answers available [Answer]` `2005-08-04`	`Sample (student) sample@mathtoearth.org`

precalculus

Stretches and compressions
what are they how do you explain them?

3f(x) ->
here you multiply your y-values by what you see.

f(3x) -> why not multiply
the x-values by 3?
Instead you multipy by the reciprocal?

No answers available [Answer]
2005-08-02 Chad (MLC Tutor) chad@mathtoearth.org

calculus

What is the primeter of an 8 by 6 ellipse? `-8int_o^(2pi)sqrt(1+64/36tan^2t) sin(t) dt
`1 answer available` `2005-08-02`	`Mather (MLC Tutor) mather@mathtoearth.org`