论文部分内容阅读
一、选择题 :( 1)～ ( 12 ) . DADA B CCCBB BD.二、填空题 :( 13) - 2 . ( 14 ) π4 . ( 15) π3.( 16 ) [- 1,3] .三、解答题( 17)本小题主要考查三角函数的基本性质和恒等变换的基本技能 ,考查运算能力 .解 :y =sinx + 2 3sinxcosx - cos4 x =( sin2 x + cos2 x) ( sin2
First, the multiple-choice questions: (1) ~ (12). DADA B CCCBB BD. Second, fill in the blank: (13) - 2 . (14) π4. (15) π3. (16) [- 1, 3] . Three Solving the Problem (17) This trivia examines the basic properties of trigonometric functions and the basic skills of equivalence transformation, and examines the computational capabilities. Solution: y = sinx + 2 3sinxcosx - cos4 x = ( sin2 x + cos2 x) ( sin2