0.35:4.2=X:308/1:6/1=10/1:X 和4.4:X=2.75:0.75谢
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0.35:4.2=X:308/1:6/1=10/1:X和4.4:X=2.75:0.75谢0.35:4.2=X:308/1:6/1=10/1:X和4.4:X=2.75:0.75谢0.35:4.2=X:3
0.35:4.2=X:308/1:6/1=10/1:X 和4.4:X=2.75:0.75谢
0.35:4.2=X:30
8/1:6/1=10/1:X 和4.4:X=2.75:0.75谢
0.35:4.2=X:308/1:6/1=10/1:X 和4.4:X=2.75:0.75谢
0.35 :4.2 = x :30
x = 0.35×30/4.2 = 10.5/4.2 = 2.5
1/8 :1/6 = 1/10 :x
x =( 1/6× 1/10 )/ (1/8) = (1/60) / (1/8) = 1/60 × 8 = 2/15
4.4 :x = 2.75 :0.75
x = 4.4 × 0.75 / 2.75 = 3.3 / 2.75 = 1.2
0.35:4.2=X:308/1:6/1=10/1:X 和4.4:X=2.75:0.75谢
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
1.用公式计算:COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对
x+[x+1/6x]+[x-1/6]=6
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
5x/x(1+x)=6/1+x
6/(x-1)-(x+2)/x(x-1)=0
[3/x]-[4/x-1]=6/x-x²
[3/x]-[4/x-1]=6/x-x²
(x+7)(x+6)-(x-2)(x+1)=?
4x^-4x+1=x^+6x+9
x平方-x+1=x平方-x分之6
x/6+x/12+x/20+x/30=1