Saturday 11 December 2010

Algorithm for To find the roots of the quadratic equation

Algorithm for To find the roots of the quadratic equation


Description:


Nature of roots of quadratic equation can be known from the
 quadrant = b2-4ac If b2-4ac >0 then roots are real and unequal

If b2-4ac =0 then roots are real and equal If b2-4ac <0 then roots are imaginary


Algorithm:

Step 1: start

Step 2: read the a,b,c value

Step 3: if b*b-4ac>0 then

 Root 1= (-b+ pow((b*b-4*a*c),0.5))/2*a
 Root 2= (-b-pow((b*b-4*a*c),0.5))/2*a


Step 4: if b*b-4ac=0 then
Root1 = Root2 = -b/(2*a)

Step 5: Otherwise Print Imaginary roots. Goto step 7.

Step 6: print roots


Step 7: stop

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