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moneybird
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What is the largest value of "x" (in radians) less than pi satisfying the equation: cos x = cos (6x)
 2 years ago
 2 years ago
moneybird Group Title
What is the largest value of "x" (in radians) less than pi satisfying the equation: cos x = cos (6x)
 2 years ago
 2 years ago

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moneybird Group TitleBest ResponseYou've already chosen the best response.2
is it the largest though?
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=graph+cos%28x%29%2C+cos%286x%29+from+0+to+pi
 2 years ago

moneybird Group TitleBest ResponseYou've already chosen the best response.2
it's the largest value of x, not the largest value of solution
 2 years ago

TuringTest Group TitleBest ResponseYou've already chosen the best response.0
right, I misunderstood
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
i'm getting x=4pi/5
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
\[\cos(x+2 \pi n)=\cos(6x) => x+2\pi n=6x\]
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=graph+cos%28x%29%2C+cos%286x%29+from+2.69+to+2.695
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
\[5x=2\pi n => x=\frac{2 \pi n}{5}\]
 2 years ago

myininaya Group TitleBest ResponseYou've already chosen the best response.2
so if n=4 x<pi
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.1
Myininaya is right
 2 years ago

moneybird Group TitleBest ResponseYou've already chosen the best response.2
ok thank you
 2 years ago

agdgdgdgwngo Group TitleBest ResponseYou've already chosen the best response.1
What's the Python solution to this problem? import sympy. sympy.solve(cos(x) = cos(6x))
 2 years ago
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