Sb Sangpi
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 May 13 comment Find the value of $A$, $n$ and $b$ if $y=A\sin(nt)+b$ has range $[2,8]$ and period $\frac{2\pi}{3}$. sorry, no. I'm confuse. thx May 13 asked Find the value of $A$, $n$ and $b$ if $y=A\sin(nt)+b$ has range $[2,8]$ and period $\frac{2\pi}{3}$. May 13 revised How to sketch $y=2\tan(x+\frac{\pi}{4})$ , $x \in (0,2\pi)$ edited tags May 13 comment How to sketch $y=2\tan(x+\frac{\pi}{4})$ , $x \in (0,2\pi)$ yes! please provide me solution step by step. Appreciate it! May 13 comment How to sketch $y=2\tan(x+\frac{\pi}{4})$ , $x \in (0,2\pi)$ yes! sorry for my lack of maths knowledge. thx May 13 asked How to sketch $y=2\tan(x+\frac{\pi}{4})$ , $x \in (0,2\pi)$ May 9 revised How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. deleted 80 characters in body May 9 accepted How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. sorry. You are right.It is totally different! thx May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. yea.when I read your answer, I understand it but compare to the answer graph.It make me confuse, the answer its the graph. thx@Arturo Magidin May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. thx for that! Does your answer look the same as my graph. $y=3sin(2\theta)$ its not in the graph. thx May 9 revised How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. added 105 characters in body May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. sorry for that, intercepts for the graph. thx! May 9 revised How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. added 38 characters in body May 9 accepted List the $x$-axis intercepts for this trigonometric function May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. yea, but can you please show me the working out. Sorry I'll be able to work out other questions as well. thx so much May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. yea, exactly. Sorry for my lucky of maths. May 9 comment How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. I think, it is almost the same? or totally different? May 9 asked How to sketch $y=2\cos\,2x+3\sin\,2x$ , $x$ for $[-\pi,\pi]$. May 8 comment List the $x$-axis intercepts for this trigonometric function yea! i think $cosx$=$\frac{\sqrt{2}}{\sqrt{2}}$ and its show in the unit cirle $\frac{7\pi}{4}$