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Lulu212 Group TitleBest ResponseYou've already chosen the best response.0
do u know how to solve this ?
 2 years ago

jeanlouie Group TitleBest ResponseYou've already chosen the best response.0
sin(2x) is more interesting :)
 2 years ago

Omniscience Group TitleBest ResponseYou've already chosen the best response.0
Is it sin^2x + 4sinx + 3 = 0 ?
 2 years ago

Omniscience Group TitleBest ResponseYou've already chosen the best response.0
dw:1345778720492:dw i dont know why latex is not working..
 2 years ago

ash2326 Group TitleBest ResponseYou've already chosen the best response.0
@Lulu212 Is it \(\sin 2x \ or \ \sin^2 x\)?
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.1
\[sin2x + 4sinx + 3\]
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.1
\[sin2x = 2sinxcosx\] \[ 2sinxcosx + 4sinx + 3 = 0 \]
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.1
have you tried that yet?
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
hm...hm.... u need...to find the General soln of this....!
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
@UnkleRhaukus @Hero @jim_thompson5910 @myininaya
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
@Hero @hartnn
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[ \sin(2x) + 4\sin (x) + 3 = 0\] \[ 2\sin(x)\cos(x) + 4\sin (x) + 3 = 0\] \[2\sin (x)\left(\cos(x)+2\right)+3=0\] \[2\sin (x)\left(\cos(x)+2\right)=3\] \[\cos(x)+2=\frac{3}2\csc(x)\] i dont know
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
@satellite73 @saadi
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
I don't understand why @UnkleRhaukus can't finish it
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
Can u Finish @Hero i am also stuck..there
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
@jim_thompson5910
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.1
hmm http://www.wolframalpha.com/input/?i=sin2x+%2B+4sin+x+%2B+3+%3D+0 i dont think its possible..
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
i think..tthere is mistake in question..))))
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
@Lulu212 can u check ur question...))
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.1
I think it should be \(sin^2x + 4sinx +3 =0\)
 2 years ago

Mimi_x3 Group TitleBest ResponseYou've already chosen the best response.1
then \(u=sinx\) more reasonable
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
then it is a quad eq
 2 years ago

Yahoo! Group TitleBest ResponseYou've already chosen the best response.0
we can find sinx
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
I'm inclined to agree with @Mimi_x3
 2 years ago

manishsatywali Group TitleBest ResponseYou've already chosen the best response.0
this question can be solved ............why u guys are worrying????????
 2 years ago

nickhouraney Group TitleBest ResponseYou've already chosen the best response.0
it cant be solved just endless ways of writing the equation
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
what are we solving for? LOL. that equation needs to be written precisely in a way that we all can agree to what it is.
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\sin^2x+4\sin x+3=0\] \[u^24u+3=0\] \[u=\frac{(4)\pm\sqrt{(4)^24\times(1)\times(3)}}{2(1)}\] \[u=2\pm\frac{\sqrt{4}}{2}\]\[u=2\pm1\]\[u=1,3\] \[(1)^2+4(1)+3=0,\qquad\qquad 3^24(3)+3=0\]\[8=0,\qquad\qquad\qquad 3^24(3)+3=0\]\[\text{false}\qquad\qquad\qquad 912+3=0\]\[\qquad\qquad\qquad\qquad0=0\]\[\qquad\qquad\qquad\text{true}\]
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
the equation toolbar in this thing sucks hairy ______. how do you write it so neatly like that?
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
so \(u=\sin(x)=3\) \[x=\arcsin (3)\] ... this question is very confusing \[\text{\[u=\frac{(4)\pm\sqrt{(4)^24\times(1)\times(3)}}{2(1)}\]}\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
oh damn my solution is way off \[\sin^2(\arcsin 3) + 4\sin (\arcsin 3) + 3 = 24≠0\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
oh \(u^2+4u+3=0\) NOT \(u^24u+3=0\)
 2 years ago

nickhouraney Group TitleBest ResponseYou've already chosen the best response.0
but this wasnt the problem that was stated lol
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[u_{1,2}=2\pm1=3,1\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\sin x=u=3,1\] \[x_{1,2}=\arcsin (1),\quad \arcsin(3)\] \[x_1=\frac \pi2\qquad, x_2=\text{some transcendental nonsense} \] hence\[x=\frac {\pi}2\] CHECKING \[\sin^2x + 4\sin x + 3 = 0\] \[\sin^2\left(\frac\pi 2\right) + 4\sin \left(\frac\pi 2\right) + 3 = 0\]\[1+4(1)+3=0\]\[0=0\]true hence \[\large{x=\frac {\pi}2}\]is the solution to \[\sin^2x + 4\sin x + 3 = 0\]
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
People who post questions need to learn how to use the equation editors to avoid such confusion.
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
couldn't agree more @Hero
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
i think someone needs to write a program that can interpet questions and convert them to \(\LaTeX\) automagically
 2 years ago

nickhouraney Group TitleBest ResponseYou've already chosen the best response.0
@lulu212 i am disappoint at this equation
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
I imagine that something like that would have to be interactive. It would have to be some kind of AI that would automatically ask the user something like: Did you mean \(\sin(2x)\) or \(\sin^2(x)\)?
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
beyond OS' capacity :P we can ask Wolfram though. That dude is probably the smartest programmer I've seen alive
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
That's because he was reincarnated Einstein
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
hahaha... I think he was already born when Einstein was still alive
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
Well, Einstein's lost twin
 2 years ago

nickhouraney Group TitleBest ResponseYou've already chosen the best response.0
this question has like 40 responses all because of a typing error
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
We're still assuming that it is a typing error
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
There's no such thing as typing errors. Only human errors.
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
the person who asked for help did not even say anything after the question was posted (TYPOGRAPHICAL ERROR)
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
can't we all be einsteins lost twin?
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
I know that I can't... I have a roach's brain compare to his
 2 years ago

nickhouraney Group TitleBest ResponseYou've already chosen the best response.0
same difference hero lol
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
twins dont necessarily have the same charistics
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
oh that's right... I'd be the opposite of his intellect then
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
* characteristic
 2 years ago

Hero Group TitleBest ResponseYou've already chosen the best response.1
In one of Einstein's lost journals, he wrote that his brain was removed as a kid. The person handling his brain accidentally dropped in brain in a toilet, but quietly removed it without telling anyone. Once the brain was placed back into Einstein's head, he felt different, like as if he had more 'powers' and 'ability'. We all know what that led to.
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
oh my.
 2 years ago

panlac01 Group TitleBest ResponseYou've already chosen the best response.0
where's David Hume?
 2 years ago
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