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OpenStudy (anonymous):
determine whether the curve has a tangent at the indicated point, if it does, give the slope, if not, explain why not. f(x) = [Sinx, 0<= x < 4pi/4 [Cosx, 3pi/4 <= x <= 2pi at x = 3pi/4
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OpenStudy (cwrw238):
there would be a break in the graph at x = 3pi/4 where sinx in positive and cos x is negative
OpenStudy (cwrw238):
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