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visits member for 2 years, 3 months
seen May 22 '13 at 16:30

Aug
24
accepted How to find $k$'s quotient of $\frac{-18}{(-2)^k}$
Aug
24
comment How to find $k$'s quotient of $\frac{-18}{(-2)^k}$
Thank you, I see now. But don't you mean $\frac{a(r^{n+1}-1)}{r-1}$? Or am I mistaken?
Aug
24
asked How to find $k$'s quotient of $\frac{-18}{(-2)^k}$
Aug
24
accepted Getting wrong result calculating sums
Aug
24
comment Getting wrong result calculating sums
I can't believe I missed such a simple mistake. Thank you!
Aug
24
asked Getting wrong result calculating sums
Aug
20
accepted Finding a value for $x$ when there should be none
Aug
20
comment Finding a value for $x$ when there should be none
@AndréNicolas Ah, yes, I see. Thank you.
Aug
20
comment Finding a value for $x$ when there should be none
@AndréNicolas You mean dividing by $0$?
Aug
20
comment Finding a value for $x$ when there should be none
This is the second time in a row I've been stuck on a problem simply because I forgot about the zero-divide no-no. :/ Thanks.
Aug
20
asked Finding a value for $x$ when there should be none
Aug
18
comment Calculating $x$ from $x^3 = 2x^2 - x$, getting wrong result
Thanks! It never struck me that $x$ could be $0$ and that I discounted that possibility so easily.
Aug
18
accepted Compute integral $\int_{-6}^6 \! \frac{(4e^{2x} + 2)^2}{e^{2x}} \, \mathrm{d} x$
Aug
18
accepted Getting square root of negative in completing the square problem
Aug
18
accepted Calculating $x$ from $x^3 = 2x^2 - x$, getting wrong result
Aug
18
comment Calculating $x$ from $x^3 = 2x^2 - x$, getting wrong result
I did actually try $x=1$ in the original equation, but were confused as I was supposed to find two separate for $x$. I didn't even stop to think it could be $0$. Thanks!
Aug
18
asked Calculating $x$ from $x^3 = 2x^2 - x$, getting wrong result
Aug
18
revised Getting square root of negative in completing the square problem
nvm
Aug
18
revised Getting square root of negative in completing the square problem
Mixed up a + and - on $\frac{7}{4}$ (doesn't affect the outcome).
Aug
17
asked Getting square root of negative in completing the square problem