Entering Complex Numbers

To add a complex number select the Complex Number tool from the 2nd button and click on the screen. NB Complex Numbers will be added as z1, z2, ... a the variable z is reserved for 3D graphing. You can also type z_2=2+3i in the input bar and press enter to add the complex number   p=z_1*z_2 will find the product.  q=z_1/z_2 will find the quotient The command ComplexRoot[f] will display the complex roots of a polynomial function.