If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( y )
y = 0
y = 0
y = 0
y in (-oo:0) U (0:+oo)
8*y-(16/y) = 8/3 // - 8/3
8*y-(16/y)-(8/3) = 0
8*y-16*y^-1-8/3 = 0
8*y^1-16*y^-1-8/3*y^0 = 0
(8*y^2-8/3*y^1-16*y^0)/(y^1) = 0 // * y^2
y^1*(8*y^2-8/3*y^1-16*y^0) = 0
y^1
8*y^2+(-8/3)*y-16 = 0
8*y^2+(-8/3)*y-16 = 0
DELTA = (-8/3)^2-(-16*4*8)
DELTA = 4672/9
DELTA > 0
y = ((4672/9)^(1/2)-(-8/3))/(2*8) or y = (-(-8/3)-(4672/9)^(1/2))/(2*8)
y = ((4672/9)^(1/2)+8/3)/16 or y = (8/3-(4672/9)^(1/2))/16
y in { (8/3-(4672/9)^(1/2))/16, ((4672/9)^(1/2)+8/3)/16}
y in { (8/3-(4672/9)^(1/2))/16, ((4672/9)^(1/2)+8/3)/16 }
| 300*1/7 | | x+3/x-4/3=0 | | 12x-7x=40 | | 9(y-8)=2(4y+3)-78 | | 7(y-18)=8(y-14) | | x+13=x^2-14x+49 | | 28-6z=4-3z | | 7(x-2)+x=2x+4 | | -2-22= | | y/9=-22 | | 3(x-2)+4(3x-1)=7x+5(2x-1) | | -2(3t-4)+4t=7t-3 | | 3.1+(-3.7)= | | 7(x-2)+2=2x+4 | | 1111/3435+698/3435-98/3638 | | 3/8d-4/9=5/8d+11 | | 70.5581+3y=21 | | -72=-27t | | 1/t+1/b=1/f | | 4x+5=11x+16 | | -6/7(6x+4)=1/28x-17 | | z+5/z-5/4=0 | | -72=27t | | 3c^2=21c | | 6/25*5/36 | | 9x^2+y^2+9z^2-6y-72z+144=0 | | 0.25z+7=3 | | 17/3=34x | | 19x-23=2(6x-9)+7x-5 | | 15=14-0.2m | | -(-9+7)= | | 10y+5=7 |