If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
1/2-((1/2)*x^4) = 0
(-1/2)*x^4+1/2 = 0
-1/2*x^4 = -1/2 // : -1/2
x^4 = 1
x^4 = 1 // ^ 1/4
abs(x) = 1
x = 1 or x = -1
x in { 1, -1 }
| 15x^4+56x^2+49=0 | | 2c^2-16c=5 | | 2(3x-5)=42 | | 225x^8-224x^4+64=0 | | 4w-16= | | 3n+8=-13 | | 225x^8-2224x^4+64=0 | | 3x+2(x+1)=5x+4 | | 3x+2-x=2(x+1) | | x+3x=0.35 | | X(9X+1)=4X^2-23X+36 | | 0.04(x+200)=900Y | | p^2-p+0.16=0 | | Lnx+2Lnx=5 | | w=-250(t-5) | | 3n-6=7(n+2) | | 2x-10=x+8 | | 0.5x+34.8=121 | | 2m^2+-m+-15=0 | | 2m^2+-1m+-15=0 | | 0.5x=86.2 | | 3.2e-5.76=11.52-1.6 | | -3/4=y-2 | | w/2=12 | | 3a^2b-2/4a^-1b | | x^2-12-11=0 | | 5(3x-7)+15= | | 3(4x+3)= | | 7(5x+9)+5x= | | -3(2x+7)+15= | | -8h+1=33 | | 5(i+2)=3(i+6) |