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Method 3 - Using the
The advantage of this is that it can be done in
the HOME view and is quick and easy. See
page 91 for a method of copying the results to
a matrix so as to gain easier access to them.
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Find the roots of the complex equation
Method 1 - Using the QUAD function
Since this is a quadratic it can be done with the
QUAD formula mentioned in example 1., since it
is capable of giving complex results. This is
shown right, rounded to 4 dec. pts. It's up to
you of course to realize that (0,1.7321) is
but if you don't recognize it then
'S1' means ± .
Method 2 - Using POLYROOT
An alternative method is to use the POLYROOT
function and store the results to a matrix. This
offers the advantage of being able to examine
the result more easily by
and also of being able to access each root by
referring to the matrix elements in a calculation
(eg M1(1), M1(2) etc.).
POLYROOT
function
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ing the matrix,
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=
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just that portion and square it. The
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