1.用二次定理證明對于這個方程式的平方根必須含有-a/b作為它們的和,a/c作為他們的乘積
2.證明這個方程的平方根的平方是a/b-2ac,（提示）：考慮（r1+r2）.從一個關(guān)于r1+r2的表達式得出
高手進,2道英文數(shù)學(xué)題的翻譯
高手進,2道英文數(shù)學(xué)題的翻譯
1.Use the quadratic formula to prove that the roots of such an equation must have -a/b as their sum and a/c as their product.
2.Prove that the sum of the squares of the roots of such an equation is a/b-2ac. （Hint）: Consider （r1+r2）. Derive an expression for r1+r2 from this.）
1.Use the quadratic formula to prove that the roots of such an equation must have -a/b as their sum and a/c as their product.
2.Prove that the sum of the squares of the roots of such an equation is a/b-2ac. （Hint）: Consider （r1+r2）. Derive an expression for r1+r2 from this.）
英語人氣：807 ℃時間：2020-04-11 08:17:13
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