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omgitsana
what are the critical points for -2sin2x=-4?
*i already did the deriv. and this is what i got but i don't know what the cri #s of this would be
critical points are when the derivatives is 0 or DNE
i know i got to sin2x=2 but then what do i do after?
you say "the range of sine is \([-1,1]\) so it cannot be 2
oh hm.. then maybe i did something wrong... i just need to look for point of inflection