题目
2.函数y=(1)/(3^x)+3log_(3)x-(1)/(x)+pi的导数( ).A. y'=-(ln3)/(3^x)+(3)/(xln3)+(1)/(x^2)+piB. y'=-(ln3)/(3^x)+(3ln3)/(x)+(1)/(x^2)C. y'=-(ln3)/(3^x)+(3)/(xln3)-(1)/(x^2)D. y'=-(ln3)/(3^x)+(3)/(xln3)+(1)/(x^2)
2.函数$y=\frac{1}{3^{x}}+3\log_{3}x-\frac{1}{x}+\pi$的导数( ).
A. $y'=-\frac{\ln3}{3^{x}}+\frac{3}{x\ln3}+\frac{1}{x^{2}}+\pi$
B. $y'=-\frac{\ln3}{3^{x}}+\frac{3\ln3}{x}+\frac{1}{x^{2}}$
C. $y'=-\frac{\ln3}{3^{x}}+\frac{3}{x\ln3}-\frac{1}{x^{2}}$
D. $y'=-\frac{\ln3}{3^{x}}+\frac{3}{x\ln3}+\frac{1}{x^{2}}$
题目解答
答案
D. $y'=-\frac{\ln3}{3^{x}}+\frac{3}{x\ln3}+\frac{1}{x^{2}}$