f.4 a math
2006-11-29 10:38 pm
if a and b are the roots of the quadratic equation 2x^2 + ax + b=0,where b不等於0,find the values of a and b.
回答 (1)
2006-11-29 10:52 pm
✔ 最佳答案
2x^2 + ax + b=0Sum of roots = a+b = -a/2
Product of roots = ab = b/2
So, a=1/2
Then 1/2+b=-1/(2x2)
b=-3/4
參考: myself
收錄日期: 2021-04-12 22:31:27
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