Program that asks for a,b,c in a quadratic equation?

I need to write a program that asks for a, b and c in the quadratic equation

ax^2 + bx + c = 0

... and then solve it with d = b^2 - 4ac and write it according to:

d < 0 --> no real root

d = 0 --> one double root: x=-b/2a

d > 0 --> two roots: x1 = -b-sqrt(d)/2a and x2 = -b+sqrt(d)/2a

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I am a complete rookie so a little help on this is very appreciated.

Thank you fellow matlab friends.   

Answer 1

[Image Analyst]

Have you looked at the example for inputdlg()?