smc1225 (
smc1225
) wrote
in
intro_to_cs
2010-01-05 11:30 pm (UTC)
no subject
This threw me off too. I thought it was a math term as well. But they were just giving a reminder for the quadratic equation to use to answer the problem.
Formula:
a*x^2 + b*x + c
x1 = ( - b + sqrt ( b*b - 4*a*c ) ) / ( 2*a)
Use this formula to solve the problem to find the positive root of the following equation:
34*x^2 + 68*x - 510
a=34
b=68
c=-510
solve for x
x1 = (-68 + sqrt (68*68 - 4*32*-510))/(2*32) (this will give you the value of x) which you put in place of x in the problem above.
I think I did this right - it's been a while.
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no subject
Formula:
a*x^2 + b*x + c
x1 = ( - b + sqrt ( b*b - 4*a*c ) ) / ( 2*a)
Use this formula to solve the problem to find the positive root of the following equation:
34*x^2 + 68*x - 510
a=34
b=68
c=-510
solve for x
x1 = (-68 + sqrt (68*68 - 4*32*-510))/(2*32) (this will give you the value of x) which you put in place of x in the problem above.
I think I did this right - it's been a while.