x, x2−kx+k2−4=0. (1) Find the value of k such that both the solutions to the equation are positive; (2) Find the value of k such that there is only one positive solution to this equation.相关知识点: 试题来源: 解析 设关于 x 的一元二次方程 x2−kx+k2−4=0 的两个...
find values of K in the equationX^2+(K+1)X+((K+1)/4)=0 IF: a)roots are equal in magnitude but opposite in sign b)roots are equal c)one root is 1 d)roots are reciprocals of one another e)roots are real我知道问题问得是什么,,,我要的是答案。。。还有步骤。。越详细越好,...
百度试题 结果1 题目The equation x^2+kx+(k+3)=0, where k is a constant, has different real roots.Find the set of possible values of k. 相关知识点: 试题来源: 解析 k<-2 or k>6
求高人解数学问题.英文的!解得好的话加分!find values of K in the equation X^2+(K+1)X+((K+1)/4)=0 IF: a)roots are equal in magnitude but opposite in sign b)roots are equal c)one root is 1 d)roots are reciprocals of one another
Find the values of k so that the area of the triangle with vertices ( 1 1) ( 4 2k) and ( k 5) is 24 sq units - Given: Quadratic equation $px^{2} -14x+8=0$To do: To Find the value of p, for which one root of the given quadratic equation is...
百度试题 结果1 题目Find the Discriminant of the equation (x^2)(x+1)=5 () A. D=45 B. D=5 C. D=30 D. D=-5 相关知识点: 试题来源: 解析 A
Find the values of {eq}a {/eq} and {eq}b {/eq} that make {eq}f {/eq} continuous everywhere. {eq}f(x) = \left\{\begin{matrix} \frac{x^2-4}{x-2} & if x <2 \\ ax^2-bx+1& if 2 \leq x <3\\ 4x-a+b&...
The equation x2+2x−1=0 has two real roots x1 and x2. Find the values of the following expressions. (1) x21+x22= . (2) x2x1+x1x2= . (3) |x1−x2|x1x2= . (4) x31+x32= . 相关知识点: 试题来源: 解析 (1) 6 (2) −6 (3) −2√2 (4) −14 (1) N (2)...
A. x = 5 B. x = 6 C. x = 7 D. x = 8 相关知识点: 试题来源: 解析 C。先展开括号得到 3x - 6 = 15,然后将 6 移到等号右边得到 3x = 15 + 6,即 3x = 21,最后两边同时除以 3,解得 x = 7。涉及去括号和移项的知识点。
{eq}f(x) = \frac{8x^2}{x^2 + 1} {/eq} Question: Find the value(s) of x for which the slope of the curve y= f(x) is 0. {eq}f(x) = \frac{8x^2}{x^2 + 1} {/eq} Finding the Slope of a Curve: The slope of a curve is nothi...