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求下列函数的导数:(1)y=xx;(2)y=log2x2-log2x;(3)y=-2sinx2(1-2cos2x4).
题目详情
求下列函数的导数:
(1)y=x
;
(2)y=log2x2-log2x;
(3)y=-2sin
(1-2cos2
).求下列函数的导数:
(1)y=x
;
(2)y=log2x2-log2x;
(3)y=-2sin
(1-2cos2
).
;
(2)y=log2x2-log2x;
(3)y=-2sin
(1-2cos2
).
x x x
222
(1-2cos2
).
x 2 x x 2 2 2
).
x 4 x x 4 4
(1)y=x
x |
(2)y=log2x2-log2x;
(3)y=-2sin
x |
2 |
x |
4 |
(1)y=x
x |
(2)y=log2x2-log2x;
(3)y=-2sin
x |
2 |
x |
4 |
x |
(2)y=log2x2-log2x;
(3)y=-2sin
x |
2 |
x |
4 |
x |
222
x |
2 |
x |
4 |
x |
2 |
x |
4 |
x |
4 |
▼优质解答
答案和解析
(1)y=x
=x
,则函数的导数y′=
x
;
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
x x x x=x
,则函数的导数y′=
x
;
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
,则函数的导数y′=
x
;
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
3 2 3 3 32 2 2,则函数的导数y′=
x
;
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
3 2 3 3 32 2 2x
;
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
;
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
1 2 1 1 12 2 2;
(2)y=log22x22-log22x=2log22x-log22x=log22x,则函数的导数y′=
;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
1 xln2 1 1 1xln2 xln2 xln2;
(3)y=-2sin
(1-2cos2
)=2sin
cos
=sinx.则函数的导数y′=cosx
x 2 x x x2 2 2(1-2cos22
)=2sin
cos
=sinx.则函数的导数y′=cosx
x 4 x x x4 4 4)=2sin
cos
=sinx.则函数的导数y′=cosx
x 2 x x x2 2 2cos
=sinx.则函数的导数y′=cosx
x 2 x x x2 2 2=sinx.则函数的导数y′=cosx
x |
3 |
2 |
3 |
2 |
1 |
2 |
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
x |
3 |
2 |
3 |
2 |
1 |
2 |
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
3 |
2 |
3 |
2 |
1 |
2 |
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
3 |
2 |
3 |
2 |
1 |
2 |
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
3 |
2 |
1 |
2 |
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
1 |
2 |
(2)y=log2x2-log2x=2log2x-log2x=log2x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
1 |
2 |
(2)y=log22x22-log22x=2log22x-log22x=log22x,则函数的导数y′=
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
1 |
xln2 |
(3)y=-2sin
x |
2 |
x |
4 |
x |
2 |
x |
2 |
x |
2 |
x |
4 |
x |
2 |
x |
2 |
x |
4 |
x |
2 |
x |
2 |
x |
2 |
x |
2 |
x |
2 |
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