differential equations C. integral equations D. logarithmic E. quations 相关知识点: 试题来源: 解析 A。“Quadratic equation”(二次方程)属于代数方程(algebraic equations)。微分方程(differential equations)涉及导数;积分方程(integral equations)涉及积分;对数方程(logarithmic equations)涉及对数运算。反馈 收藏 ...
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**A.** a^2-5a=0 可分解为 a(a-5)=0,解得 a=0 或 a=5。 **B.** 9b^2=b+8 移项得 9b^2-b-8=0,分解为 (9b+8)(b-1)=0,解得 b=-1 或 b=8/9。 **C.** 6c^2-5c-21=0 分解为 (2c-7)(3c+3)=0,解得 c=7/2 或 c=-1。 **D.** 8/3d+5=-1/3d^2 移项并...
【题目】For the following quadratic equations, determine A in simplest form and draw a sign diagram for it. Hence find the value of m for which the equation has:i a repeated root i two distinct real roots iii no real roots.(1 x^2+4x+m=0(2) mx^2+3x+2=0(3 mx^2-3x+1=0 ...
Candes, "Solving random quadratic systems of equations is nearly as easy as solving linear systems," in Adv. Neural. Inf. Process. Syst. (NIPS), pp. 739-747, 2015.Yuxin Chen and Emmanuel Candes. Solving random quadratic systems of equations is nearly as easy as solving linear systems. In...
【题目】2) In the following equations,() are quadratic equations in one variable.① 2x^2=-3x ;② 3x^2(x-3)=x ③(3x-2) √3(y^2-1)=√(15) ;④ 2/(x^2)-1=0 ;⑤(y^2)/4= 7;⑥ x^2=9 .(A)①,③ and ⑤B),⑤ and ⑥C)①,③ and ④D)②,④ and ⑤ ...
2) In the following equations,() are quadratic equations in one variable.① 2x^2=-3x; ② 3x^2(x-3)=x ;③ (3x-2)√3(y^2-1)=√(15) ;④ 2/(x^2)-1=0 ;⑤=7;⑥ x^2=9A)①,③ and ⑤B)①,⑤ and⑥C)①,③ and ④D)②,④ and ⑤ 相关知识点: 试题来源: 解析 B...
How to Solve Quadratic Equations in Excel Steps: Go toE10and enter the quadratic equation. =5*E9^2 - 4*E9 - 9 E9refers to the values ofX. Go to theDatatab >> clickWhat-If Analysis>> selectGoal Seek. InGoal Seek: InSet cell, enterE10>> inTo value, enter10>> inBy changing cell...
2. Solve the following quadratic equations by using completing the square method.(a) 2x^2+5x-2=0(b) -2x^2+7x+8=0(c) -x^2+5x+8=0(d) -x^2-2x+4=0(e) x^2+5x-3=0(f) 2x^2+4x-7=0 相关知识点: 试题来源: 解析 (a) x=-2.8508, x=0.3508(b) x=-0.9075, x=4.4075(c)...
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