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anonymous
 one year ago
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anonymous
 one year ago
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amistre64
 one year ago
Best ResponseYou've already chosen the best response.3what is our derivative of f wrt.x?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3+ not  factor out the 2 and ... what do you see that we can do then?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3or set it equal to 0, subtract off the 2, divide by 2 etc ...

amistre64
 one year ago
Best ResponseYou've already chosen the best response.32(1 + cos(2x)) = 0 since 2 is never 0, that only leaves 1+cos(2x) to be zero for this to have any chance of working

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3when does 1+cos(2x) = 0?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3no cos(0) = 1, not 1

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3cos(2x) = 1 is what we want for 1 + cos(2x) to be zero

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3cos(pi) = 1, so when does 2x = pi?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3cos(3pi) = 1 as well, any odd multiple of pi makes cos go to 1 2x = 3pi should fit in the interval if i see it correctly

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3those are approaches that I would take to find the answer ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Which do you think is the best approach

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3ive only given 1 approach

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3given that our interval is from x=0 to pi 2x gives us a range from 0 to 4pi to play with cos(pi) and cos(3pi) are both equal to 1 so we will have 2 solutions.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.32x= pi, and 2x = 3pi

amistre64
 one year ago
Best ResponseYou've already chosen the best response.3** our interval is x=0 to 2pi ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So x=pi/2 and x=3/2pi
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