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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x+2/y = 0
2*x^-1 = -(2*y^-1) // : 2
x^-1 = -y^-1
-1 < 0
1/(x^1) = -y^-1 // * x^1
1 = x^1*(-y^-1) // : -y^-1
1/(-y^-1) = x^1
x = 1/(-y^-1)
x = 1/(-y^-1)
| 10+4*4= | | x/-5 | | S+87.8=31.1 | | 1.25x-3.25=81 | | (9x-4)(4x+5)= | | -16t^2+32t+10=16 | | 5x-(0.345-x)=5x+0.713 | | 1.25x+3.25=81 | | 8(6x+5)= | | 3.5n+6.4=42.5 | | -16x^2+30x+225=0 | | 4.3x+1.7=41.94 | | ln(7x+11)=5 | | a^2-12a+13=0 | | 4.3x+1.7=42.94 | | (y-1)(3y-4)= | | (6x^2-3x^3)-(3x^2-7x^3)= | | -4-3g=8 | | 3x-0.54=2(x-0.15) | | -4.9x^2+30x+3=20 | | 9.8+2=3.8x+20 | | 5.3x+(-7)=2.3x+5 | | y=b+-60x | | -4/7w=16 | | 9.3x+(-6.2x)=12.4 | | 1.3x+2.8x=12.3 | | 6y^4-15y^3=0 | | (-3x^1/2)+(x)-(4)=0 | | 60/6 | | -13+2b=11 | | -4.5x=13.5 | | -3x^1/2+x-4=0 |