A. $\frac{1}{2}x^{\frac{3}{2}}+C$
B. $\frac{2}{3}x^{\frac{3}{2}}+C$
C. $\frac{1}{2\sqrt{x}}+C$
D. $\frac{2}{\sqrt{x}}+C$
3.将适当的函数填入下列括号内,使等式成立.-|||-(6) [ ln (2x+3)] = ()d(2x+3)= () dx
若等式 dx = kd(3 - (x)/(5)) 成立,则k=()A. 5B. -5C. $\frac{1}{5}$D. $-\frac{1}{5}$
4.【单选题】若等式dx=kd(3-(x)/(5))成立,则k=()A. 5B. -5C. $\frac{1}{5}$D. $-\frac{1}{5}$
27.-|||-请将正确的答案填入括号内 (1)=dfrac (1)(sqrt {x)}dx-|||-A sqrt (x)-|||-B sqrt (x)+c-|
int sqrt (x)sin sqrt (x)dx; ;
下列等式成立的是( )。A.|f(x)dx=f(x)+CB.|f(x)dx=f(x)+CC.|f(x)dx=f(x)+CD.|f(x)dx=f(x)+C
int (1)/(sqrt(x) + sqrt[3](x)) dxA. $6\sqrt{x} - 6\sqrt[3]{x} + 6\sqrt[6]{x} - 6
)int dfrac (dx)(sqrt {x)+sqrt [4](x)}
int dfrac (dx)(sqrt {x)+sqrt [4](x)}; ;
(4)若 (int )_(0)^1f(x)dx=agt 0, 则 (int )_(0)^1dfrac (1)(sqrt {x)}f(sqrt (x))dx=()