3x=3.6 X+2.5=10 X-18=40 2Y+7=91 8M÷2=15
3x=3.6 X+2.5=10 X-18=40 2Y+7=91 8M÷2=15
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
关于x,y的方程组3x-5y+3m,2x+7y=m-18的解x,y互为相反数,则m=
4.解方程,要正确3x=3.6 x+2.5=10x-18=40 5x-3.9=5.12y+7=91 8m除以2=15
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若全集I={(x,y)|x,y∈R},集合M={(x,y)|(y-3)/(x-2)},N{(x,y)|y=x=1},则(
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值