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D( x )
x <= 0
x <= 0
x in (0:+oo)
(1/3)*ln(x) = 0
1/3*ln(x) = 0 // : 1/3
ln(x) = 0
ln(x) = ln(e^0)
x = e^0
x = 1
| y^2=-49-14y | | 5/8y-1/9=1/2 | | 1/4x^2=49 | | 135x=15 | | 52400=400x | | 21=21y | | 0.15*0.34= | | 3k=-q+3z | | 14+6x=x^2 | | 3/4x.5 | | -27+-34-16-(-12)= | | -6x(x-2)=42 | | -4-5(6-1)=-29 | | 46=x+3x+2+7x | | -6-12=12 | | -7(-4u-3w+5)= | | 106x-6/1315 | | 9(z+1)-3(z-3)=2(z-2)+3(z-2) | | u=v/14 | | -6y(3x-5y)+2(6x+2y)= | | 3(b+4)=36-3b | | V/14=28 | | 4(v+6)= | | Sec^2x+4secx-12=0 | | 5x+8x-6x=22+6 | | (1-y)(5y+9)=0 | | 2X+X+5X= | | 1(x+60)+1.3x=55 | | 0.40x+0.20(170)=0.20(146) | | 5.8y-2.9y= | | -11(3/2)(.12(-12) | | 97+x=312 |