How do you find the critical points to graph sin(3x)? Trigonometry Graphing Trigonometric Functions Translating Sine and Cosine Functions 1 Answer mizoo Mar 20, 2018 x = (kpi)/3 + pi/6, k any integer Explanation: d/dx sin(3x) = 3cos(3x) 3cos(3x) = 0 3x = kpi + pi/2 ,k any integer x = (kpi)/3 + pi/6, k any integer Answer link Related questions How do you graph sine and cosine functions when it is translated? How do you graph y=sin ( x -frac{\pi}{2} )? How do you draw a sketch of y = 1 + cos (x - pi) How do you shift and graph y=-3+sinx? How do you graph y=3sin(1/3x+ pi/2)-2? How do you graph 1/2sin(x-pi)? How do you graph -sinx+2? How do you graph y=3sin(1/2)x? How do you graph y=-2cos((pix)/3)? How do you graph y = (1/2)sin(x - pi)? See all questions in Translating Sine and Cosine Functions Impact of this question 2273 views around the world You can reuse this answer Creative Commons License