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  • 经济数学基础12形考任务1题目92页

    题目9:(1)y=x2+2x+log2x−22,求y解:y=2x+2xln2+1xln2(2)y=ax+bcx+d,求y解:y=a(cx+d)−c(ax+b)(cx+d)2=ad−cb(cx+d)2(3)y=1√3x−5,求y解:y=1√3x−5=(3x−5)−12;y=−32√(3x−5)3(4)y=√x−xex,求y解:y=12√x−(x+1)ex(5)y=eaxsinbx,求dy解:y=(eax)sinbx+eax(sinbx{)¿=aeaxsinbx+eaxcosbx⋅b=eax(asinbx+bcosbx)dy=eax(asinbx+bcosbx)dx(6)y=e1x+x√x,求dy解:dy=(32√x−1x2e1x)dx(7)y=cos√x−e...

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