Using the equation for roots of a quadratic equation gives: x=−8±64+4×0⋅6×56⋅61⋅2=5⋅1Hence the maximum deflection is given by: Ely=−0⋅53×5⋅13+0⋅33×1⋅13+40⋅6×5⋅1=137⋅2Note that in the above equation the forces have been in kN. Hence y...
The roots of the quadratic equation x² - 3x + 2 = 0 are the solutions of the inequality y < 0 for the quadratic function y = x² - 3x + 2. Then the solution set of the inequality is: A. 1 < x < 2 B. x < 1 or x > 2 C. x < 1 and x > 2 D. 1 ≤ x ≤ ...
The roots of a quadratic equation with rational coefficients are p±√q.Write the equation in standard from in terms of p and Adrien said that if the roof of a quadratic equation are 1\2 and 3\4 ,the equation is 4x^2 -5x +3\2 =0.Olivia said that the equation is 8x^2 -10x +...
Consider a general quadratic with the coefficient of x1 being 1 and the roots being r and s. It can be factored as (x−r)(x−s) which is just x2−(r+s)x+rs. Thus, the sum of the roots is the negative of the coefficient of x and the product is the constant term. (In...
8 The roots of the quadratic equation 2.x2-3.x +1= 0 are a and B(i) Show th a α^2-αβ+β^2=(α+β)^2-3αβ .(ii) Find the quadratic equation whose roots are a' and b'[6] 相关知识点: 试题来源: 解析 (i)-a^2-2a^2-a^2-b^2-2ab(shown)(ii)∴y=3xNew ...
试题来源: 解析 su mofroots=2x+2β 4/1=2(d+β) x+β=2 p roducto+rwt_3=2d*2β 6/1=4dβ 6=4d αβ=6/4 α^3+β^3=(α+β)(α^2-αβ+β^2) =(2)[(2)^2-2(6/4)-6/4] =-1 α^3+β^3=-1 反馈 收藏
(i)Write down the quadratic equation in the form of x^2+px+q=0.(ii)Find,in the same form,the quadratic equation with roots α^3 and β^3(i)Quadratic equation:x^2-5x+7=0(ii)new sum of roots:∴∠ADE=90°new produc of roots:=-3+3+1-(-1+4)^2The new quadrati equation ...
百度试题 结果1 题目&be the roots of the quadratic equation2 3=then the value of10A)(11)/3 3 B 3/(11)C D) None of these 相关知识点: 试题来源: 解析 A 反馈 收藏
Quadratic Equation(二次方程式的问题)let k be a constant,if A and B are the roots of the equation x2 - 3x +k = 0,the A2 + 3B = ?k 是恒数,如果A和B是x 2- 3x+ k= 0的根,A2 + 3B = ? 相关知识点: 试题来源: 解析 因为A和B是x 2 - 3x+ k= 0的两个根,所以A+B=3,即B...
百度试题 结果1 题目(ii) a quadratic equation with roots 相关知识点: 试题来源: 解析 sum of new roots= =(3(a^3+β^3))/(|aβ|^3) =9/((Qβ)^3) =9/((6/4)^3) =8/3 =-3/2 =-8/9 反馈 收藏