计算∫(-1到1)[(x的绝对值)ln(x+√(1+x^2)dx]
举一反三
- 设f(x)=(1/(1+x^2))+x^3∫(0到1)f(x)dx,求∫(0到1)f(x)dx
- 函数 $y=\ln \sqrt{x}$的微分为 A: $\frac{1}{2}\ln x dx $ B: $\frac{1}{2}dx$ C: $\frac{1}{2x}dx$ D: $\ln x dx$
- \(\int { { {\sec }^{3}}xdx}\)=( ) A: \(\frac{1}{2}\sec x\cot x-\frac{1}{2}\ln \left| \sec x+\tan x \right|+C\) B: \(\frac{1}{2}\sec x\tan x+\frac{1}{2}\ln \left| \sec x+\tan x \right|+C\) C: \(-\frac{1}{2}\csc x\tan x+\frac{1}{2}\ln \left| \sec x-\cot x \right|+C\) D: \(-\frac{1}{2}\sec x\tan x-\frac{1}{2}\ln \left| \csc x+\tan x \right|+C\)
- 不定积分[f′(x)/(1+[f(x)]2)]dx等于() A: ln|1+f(x)|f+c B: (1/2)1n|1+f(x)|+c C: arctanf(x)+c D: (1/2)arctanf(x)+c
- 不定积分[f′(x)/(1+[f(x)]2)]dx等于() A: ln|1+f(x)|f+c B: (1/2)1n|1+f2(x)|+c C: arctanf(x)+c D: (1/2)arctanf(x)+c