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)
cos(pi/2)*x = -1 // + 1
cos(pi/2)*x+1 = 0
1 = 0
x belongs to the empty set
x belongs to the empty set
| 7e+2e+4=0 | | 10x^2+2x=7 | | 6+3c+2c=0 | | 7n-3n+3=0 | | x^4=0.0005 | | 3x-12=-4x^2 | | -6x+6x^2=8 | | 2x^2+9x=-1 | | x(x-10)=-10 | | 5x^2+5x-7=0 | | 2x+4+5=0 | | 3(x-2)+2x(x+1)= | | -2p+-24=6 | | -4q+-14=-6 | | 9z-34=4z-3 | | 9t-38=7 | | 90-36x+30x+90=6x-24+108-9x | | =3(x-2)+2x(x+1) | | 4x-23=6/x | | -4q-14=6 | | x-18=-9 | | 8d+2=2d+38 | | 8(x-4)=-8.8 | | 7(x-5)=33.6 | | 3.7c=-33.6 | | 2(a+2)=11.8 | | 4(a+6)=34 | | -16t^2+95t+6=0 | | 32.4=4c-6 | | 46.5=5c-1 | | 4e-5=-3.4 | | 5e-8=8 |