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visits member for 1 year, 11 months
seen Dec 29 '13 at 17:05

highschool student


Feb
26
awarded  Popular Question
Apr
28
awarded  Yearling
Jul
4
accepted Maximum point of a polar function
Jun
21
comment Maximum point of a polar function
Ohh, I mixed up $r$ and $y$ right there. So $\frac{d}{d\theta}\left (a^2 \cos{2 \theta} \cos^2{\theta} \right )=0$ will end up giving me $r=a$ right?
Jun
21
comment Maximum point of a polar function
From the point $O$ to the point where $\theta = 0$ I want that length on the x-axis. Isn't that the maximum value of $r$?
Jun
21
asked Maximum point of a polar function
Jun
20
comment Plotting a complex argument arc
+1 I like your answer but it seems like too much work for the time I can spend on this part of an exercise
Jun
20
asked Plotting a complex argument arc
Jun
15
accepted Integral of $\int 2\,\sin^{2}{x}\cos{x}\,dx$
Jun
15
asked Integral of $\int 2\,\sin^{2}{x}\cos{x}\,dx$
Jun
14
accepted Expressing $\sin(2x)-8\cos(2x)$ as a single sine function
Jun
14
comment Expressing $\sin(2x)-8\cos(2x)$ as a single sine function
Ah, got it. Thanks a lot guys for your help!
Jun
14
comment Expressing $\sin(2x)-8\cos(2x)$ as a single sine function
So now I am at $\sqrt{65}\sin{(2x+a)}$, How would I go for finding that a?
Jun
14
comment Expressing $\sin(2x)-8\cos(2x)$ as a single sine function
So in a case like $-2\sin(3x)-5\cos(3x)$ would I use $\sqrt{(29)}$?
Jun
14
comment Expressing $\sin(2x)-8\cos(2x)$ as a single sine function
How did you arrive to $\sqrt{65}$?
Jun
14
asked Expressing $\sin(2x)-8\cos(2x)$ as a single sine function
Jun
14
accepted Method for sketching $y = (1 – 3t + 2t^{2})e^{3t}$
Jun
14
revised Method for sketching $y = (1 – 3t + 2t^{2})e^{3t}$
added 91 characters in body
Jun
14
comment Method for sketching $y = (1 – 3t + 2t^{2})e^{3t}$
This was a past examination question, the only thing I am allowed to use is a calculator
Jun
14
asked Method for sketching $y = (1 – 3t + 2t^{2})e^{3t}$