Use the keyword rectangular to write a complex number in standard, rectangular form, a + bi.

PTC Mathcad assumes that all symbolic variables in an expression are complex. However, when you apply the keyword rectangular, variables are treated as real. In this case, the returned answer is in the standard, rectangular form a + bi, where a and b are the real and imaginary parts of the complex number, respectively. For example, evaluate the following complex conjugate:

PTC Mathcad assumes that a and b are complex, so it returns the answer with conjugate bars over a and b. But if you add the keyword rectangular, PTC Mathcad assumes that a and b are real, so it removes the conjugate bars and takes the conjugate of i to return the following result:

The keyword rectangular replaces the deprecated keyword complex, which will be removed in a future release of PTC Mathcad.