函数y=cos(2x+1)的导数是( )
| A、y′=sin(2x+1) |
| B、y′=-2xsin(2x+1) |
| C、y′=-2sin(2x+1) |
| D、y′=2xsin(2x+1) |
若函数y=-4x4+lnx,则y′等于( )
A、4x3+
| ||
B、-16x3+
| ||
| C、16x3+ex | ||
D、-4x3+
|
| A、y′=sin(2x+1) |
| B、y′=-2xsin(2x+1) |
| C、y′=-2sin(2x+1) |
| D、y′=2xsin(2x+1) |
A、4x3+
| ||
B、-16x3+
| ||
| C、16x3+ex | ||
D、-4x3+
|