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试题1(安徽卷,理科第6题)将函数 y=sin ωx(ω>0)的图象按向量 a=(-π/6,0)平移,平移后的图象如图1所示,则平移后的图象所对应函数的解析式是( ).A.y=sin(x+π/6)B.y=sin(x-π/6)C.y=sin(2x+π/3)D.y=sin(2x-π/3)试题特点:已知三角函数图象求解析式是高考中的常考题,但本题又结合向量知识使得试题更加综合化、更加灵活化,难度进一步加深,当然入口也更宽.
Question 1 (Anhui Volume, Science Question 6) The image of the function y = sin ωx (ω> 0) is translated by vector a = (- π / 6,0). The translated image is shown in Figure 1, The analytical function of the function corresponding to the translated image is () Ay = sin x + π / 6 By = sin x - π / 6 Cy = sin Dy + 2x-π / 3) questions features: known trigonometric function image analysis formula is the college entrance examination exam questions, but this question combined with vector knowledge makes the questions more integrated, more flexible, the difficulty further deepened, of course, the entrance is also wider .