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D( x )
x <= 0
x <= 0
x in (0:+oo)
((ln(x))^1)/3 = 0
ln(x)/3 = 0
1/3*ln(x) = 0 // : 1/3
ln(x) = 0
ln(x) = ln(e^0)
x = e^0
x = 1
| 9x+8y=24 | | 7m+11m=54 | | (t+-6)9.25=138.75 | | 9.8-16(0.3933333333)=15.7-0.3933333333 | | 32.6+(-56.24)= | | 2(9z+9w)+12w= | | 5x+6y=19 | | 3x+5+25-10=180 | | -38r=76 | | .2x+4=8 | | y/15=-2 | | -4.68-35.3= | | -1.5+2.3=-1.8w+2.6 | | 9-8x^(1/2)=x^(1/2) | | 1.25r+5.99=20.99 | | 7(x+4)-1=35-4x-8+11x | | x-9=x-5 | | -x-3=2x+36 | | 8y-3=21 | | 9x+3x-14=22 | | 3.5d+9.75=1+4.75d | | 8p= | | -9/8x=-4 | | -2(5r+8)= | | 8+p= | | 4/7x=3 | | 9(9c-1)-12=79c+9 | | 120.42=2.25h+73.17 | | (x+3)(x+7)=60 | | xy+3x=2y | | -5m+3=-7m+2m-8 | | 18n-50=0 |