Mathematica can try to solve equations for you. Note that the equation has to have two equal signs!
![[Graphics:Images/Solve_gr_1.gif]](Images/Solve_gr_1.gif)
Include the variable name you want to solve for, if the choice is not obvious. Here is the quadratic formula:
![[Graphics:Images/Solve_gr_3.gif]](Images/Solve_gr_3.gif)
Mathematica always includes complex solutions.
![[Graphics:Images/Solve_gr_5.gif]](Images/Solve_gr_5.gif)
If there are problems, the program will let you know. If it does not know what to do, or just can't do it, it will return the input unchanged.
![[Graphics:Images/Solve_gr_7.gif]](Images/Solve_gr_7.gif)
![[Graphics:Images/Solve_gr_10.gif]](Images/Solve_gr_10.gif)
If you are interested in numerical solutions use "NSolve" instead of "Solve".
![[Graphics:Images/Solve_gr_13.gif]](Images/Solve_gr_13.gif)
![[Graphics:Images/Solve_gr_15.gif]](Images/Solve_gr_15.gif)
![[Graphics:Images/Solve_gr_17.gif]](Images/Solve_gr_17.gif)
![[Graphics:Images/Solve_gr_20.gif]](Images/Solve_gr_20.gif)
This works the same as for one equation. Input the system of equations and the variables to solve for as lists.
![[Graphics:Images/Solve_gr_24.gif]](Images/Solve_gr_24.gif)
![[Graphics:Images/Solve_gr_26.gif]](Images/Solve_gr_26.gif)
![[Graphics:Images/Solve_gr_28.gif]](Images/Solve_gr_28.gif)
![[Graphics:Images/Solve_gr_30.gif]](Images/Solve_gr_30.gif)
![[Graphics:Images/Solve_gr_32.gif]](Images/Solve_gr_32.gif)