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Sep
18
revised Basic set questions
Forgot to answer the last part
Sep
18
answered Basic set questions
Sep
8
answered Simplifying expression with absolute value and unknown
Aug
23
comment A question on Taylor Series and polynomial
I think the OP means that the Taylor series is finite.
Aug
22
answered In eigenvector calculations, why does $A-\lambda I$ need to be singular?
Aug
21
comment Graph $f(x)=\ln x+2$
@AustinBroussard: Yes, that's right.
Aug
21
comment Graph $f(x)=\ln x+2$
@AustinBroussard: I don't understand what you said about a horizontal asymptote having to do with $y \to \pm \infty$. A function has a horizontal asymptote, more or less, if it has a limit (not infinity) when $x$ goes to $\pm \infty$, and the logarithm doesn't have one. It simply goes to infinity.
Aug
21
comment Graph $f(x)=\ln x+2$
@AustinBroussard: This is a minor terminology thing. Rather than undefined, I would say that there is no y-intercept. The functions $\ln x$ and $\ln x + 2$ are undefined at $x=0$, so there is no y-intercept.
Aug
21
answered Graph $f(x)=\ln x+2$
Aug
21
comment Graph $f(x)=\ln x+2$
Don't you mean $\ln x + 2$, or maybe $\ln(2+x)$?
Aug
13
comment Why can't $\int_0^1\sin(x^2) dx$ be equal to $2$?
Forgive me if I'm missing something, but why would it be 2? I mean, with so many numbers to choose from, why would you expect it to be 2?
Aug
10
accepted Basic group theory exercise
Aug
10
asked Basic group theory exercise
Aug
6
comment Projectile Motion
@ladaghini: Nothing, my mistake.
Aug
6
revised Projectile Motion
missed a delta x
Aug
6
answered Projectile Motion
Aug
6
comment Projectile Motion
@GorillaOne: Yes, sorry, I messed that up. I'll write an answer if I figure it out.
Aug
6
comment Projectile Motion
@GorillaOne: If you know those, you can find out the time from $x=x_0+v_x t$
Aug
1
comment Derivative of $x^x$ at $x=1$ from first principles
@user758556: I guess to use L'Hôpital's you would have to know $\frac{\mathrm{d}}{\mathrm{d}h} (x+h)^h$, which sorts of defeats the purpose of using the limit definition in the first place.
Jul
29
answered Finding $a$ from $\lim\limits_{x\rightarrow0}(1+a\sin x)^{\csc x} =4$