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anonymous
 5 years ago
(pi/4)sin(pix/4) solve for x, x >(or equal to) 0 x <(or equal to) 10 and i should end up with x= 0,4,8 how does that work?
anonymous
 5 years ago
(pi/4)sin(pix/4) solve for x, x >(or equal to) 0 x <(or equal to) 10 and i should end up with x= 0,4,8 how does that work?

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dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.1is there any other info? i think it should be equal to something in order to solve for x

dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.1wait nevermind its (pi/4)sin(pi*x/4) = 0 divide by pi/4 on both sides leaving sin(pi*x/4) = 0 now think about the graph of the sin function it is only zero at x=0,pi,2pi...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ohhhh but then i get where it is 0. im not gettting that once i get to sin(pi*x/4) what does the pi/4 contribute? idk if im stating that correctly

dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.1think of it this way say y = pi*x/4 we know sin(y) = 0 at y=0,pi,2pi so set up three equation pix/4 = 0 or pi or 2pi and solve for x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh ok, thats what i did wrong. i solved for 0, but i forgot that sin is 0 at pi and 2pi. and that i need to account for that too. thank you sooo much!
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