How to stop quadratic formula calculator from giving inverse outputs?
Hi, I’m doing a worksheet based around matlab which involved solving quadratic formulas. I probably overcomplicated it and now made a calculator that keeps giving the inverse of my expected answer, could anyone help please?
for k = 1 : 7
disp ( ‘ For the equation ax^2 + bx + c ‘ )
a = input ( ‘ Enter a; ‘ );
b = input ( ‘ Enter b; ‘ );
c = input ( ‘ Enter c; ‘ );
D = ( b^2 ) – ( 4 * a * c );
if D < 0
fprintf ( ‘ n The equation has no real roots . nn ‘)
elseif D == 0
root = -b / ( 2 * a );
fprintf ( ‘ nThe equation has one root, n ‘ )
fprintf ( ‘ %.7fnn ‘ , root )
else
r1 = ( – b + sqrt ( D ) ) / ( 2 * a ) ;
r2 = ( – b – sqrt ( D ) ) / ( 2 * a ) ;
fprintf ( ‘n The equation has two roots, n ‘ )
fprintf ( ‘ %.7f and %.7fnn ‘ , r1 ,r2 )
end
end
For the equation ax^2 + bx + c
Enter a;
1
Enter b;
9
Enter c;
14
The equation has two roots,
-2.0000000 and -7.0000000
For the equation ax^2 + bx + c
Enter a;
1
Enter b;
-3
Enter c;
-18
The equation has two roots,
6.0000000 and -3.0000000Hi, I’m doing a worksheet based around matlab which involved solving quadratic formulas. I probably overcomplicated it and now made a calculator that keeps giving the inverse of my expected answer, could anyone help please?
for k = 1 : 7
disp ( ‘ For the equation ax^2 + bx + c ‘ )
a = input ( ‘ Enter a; ‘ );
b = input ( ‘ Enter b; ‘ );
c = input ( ‘ Enter c; ‘ );
D = ( b^2 ) – ( 4 * a * c );
if D < 0
fprintf ( ‘ n The equation has no real roots . nn ‘)
elseif D == 0
root = -b / ( 2 * a );
fprintf ( ‘ nThe equation has one root, n ‘ )
fprintf ( ‘ %.7fnn ‘ , root )
else
r1 = ( – b + sqrt ( D ) ) / ( 2 * a ) ;
r2 = ( – b – sqrt ( D ) ) / ( 2 * a ) ;
fprintf ( ‘n The equation has two roots, n ‘ )
fprintf ( ‘ %.7f and %.7fnn ‘ , r1 ,r2 )
end
end
For the equation ax^2 + bx + c
Enter a;
1
Enter b;
9
Enter c;
14
The equation has two roots,
-2.0000000 and -7.0000000
For the equation ax^2 + bx + c
Enter a;
1
Enter b;
-3
Enter c;
-18
The equation has two roots,
6.0000000 and -3.0000000 Hi, I’m doing a worksheet based around matlab which involved solving quadratic formulas. I probably overcomplicated it and now made a calculator that keeps giving the inverse of my expected answer, could anyone help please?
for k = 1 : 7
disp ( ‘ For the equation ax^2 + bx + c ‘ )
a = input ( ‘ Enter a; ‘ );
b = input ( ‘ Enter b; ‘ );
c = input ( ‘ Enter c; ‘ );
D = ( b^2 ) – ( 4 * a * c );
if D < 0
fprintf ( ‘ n The equation has no real roots . nn ‘)
elseif D == 0
root = -b / ( 2 * a );
fprintf ( ‘ nThe equation has one root, n ‘ )
fprintf ( ‘ %.7fnn ‘ , root )
else
r1 = ( – b + sqrt ( D ) ) / ( 2 * a ) ;
r2 = ( – b – sqrt ( D ) ) / ( 2 * a ) ;
fprintf ( ‘n The equation has two roots, n ‘ )
fprintf ( ‘ %.7f and %.7fnn ‘ , r1 ,r2 )
end
end
For the equation ax^2 + bx + c
Enter a;
1
Enter b;
9
Enter c;
14
The equation has two roots,
-2.0000000 and -7.0000000
For the equation ax^2 + bx + c
Enter a;
1
Enter b;
-3
Enter c;
-18
The equation has two roots,
6.0000000 and -3.0000000 quadratic formula MATLAB Answers — New Questions
