y′ =10^(x+y) 急求这道高数题微分方程的通解.
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y′ =10^(x+y) 急求这道高数题微分方程的通解.
y′ =10^(x+y) 急求这道高数题微分方程的通解.
y′ =10^(x+y) 急求这道高数题微分方程的通解.
dy/dx=10^x* 10^y
10^(-y)dy=10^x dx
积分得:-10^(-y)/ln10=10^x/ln10 +C1
化简得通y=-lg(C-10^x)
y′ =10^(x+y) 急求这道高数题微分方程的通解.
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
x+y=20,x-y=10,y=
y+10x=x+y+9 10y+x=y+10x+27
(x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5
{6/x+y+10/x-y=30 6/x+y-10/x-y=-1
y+y+x=10,x+y+x=8,y=?,x=?
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X+Y-8X+10Y+41=O,求X/Y-Y/X的值
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化简 x / y(x+y) - y / x(x+y) =
y′=-x/y 通解
X+Y=7(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)