Monday, 13 January 2014

algebra precalculus - Logarithmic Equations and solving for the variable

The equation is lnx+ln(x1)=ln2 . I have worked it all the way through, and after factoring the x21x2 I got x=2, x=1, but my question is: Can we have both solutions or couldn't we have the negatives?

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real analysis - How to find limhrightarrow0fracsin(ha)h

How to find limh0sin(ha)h without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...