If the equation in x, x^2+mx+n=0 , has two equal real roots, then a pair of real values ofm and n that satisfies the condition could be m =and n = 相关知识点: 试题来源: 解析 2 1 (can be any values of m and n aslong as they satisfy m2= 4n) ...
x取任意实数,②当x≠0时,b=-a,ax+b=0,即为ax-a=0,解得x=1,此时方程有唯一解,综上所述,方程有唯一解或有无数解.故选C.
【题目】If the equation (x-a)2=b has real solutions, then the set of values that b can take is 相关知识点: 试题来源: 解析 【解析】 结果一 题目 10 Iftheequatin(x-a)^2=bhasrealsOlutin(x-y) then the set of values that b can take is 答案 10 b≥0...
百度试题 结果1 题目If the equation is 2x + 3 = 9. What is the value of x? A. 2 B. 3 C. 4 D. 5 相关知识点: 试题来源: 解析 B。解方程 2x + 3 = 9,先移项得到 2x = 9 - 3 = 6,再两边同时除以 2,可得 x = 3。
18 If the equation inx, x^2+mx+n=0 has two equal real roots, then a pair of real values ofm and n that satisfies the condition could bem =and n = 相关知识点: 试题来源: 解析 18 2 1 (can be any values of m and n aslon gastheysatisfym^2=4n) ...
百度试题 结果1 题目【题目】9 If the equation (m+2)x2+3mx-4m= 0 in terms of. is a linear equation in one variable,then the solution of the equation is 相关知识点: 试题来源: 解析 【解析】x=4/3
解析 x=4/3 结果一 题目 9 If the equation (m+2)x^2+3mx-4m=0 n terms of x is a linear equation in one variable,thenthesolutinηtlont 答案 x=4/3相关推荐 19 If the equation (m+2)x^2+3mx-4m=0 n terms of x is a linear equation in one variable,thenthesolutinηtlont ...
be a constant. If the quadratic equation x2 ax a=1 has equal roots, then a=( ). 设a为一常数.若二次方程x2 ax a=1有等根,则a=( ).A. −1. B. 2. C. 0 or −4.0或−4. D. 0 or 4.0或4. 相关知识点: 试题来源: 解析...
211If the equation (k+1)x2-2x+3=0 in x has two real roots,then the set of value that k cantake is1 D If the equation (k+1)x2-2x+3=0 inxhas two real roots, then the set of value thatk can take is__ 31 D If the equation (k+1)x2-2x+3=0 inxhas two real roo...
If the equation of a surface S is z=f(x,y), where x^2+y^2≤ R^2 and you know that |f_x|≤ 1 and |f_y|≤ 1, what can you say about A(S)? 相关知识点: 试题来源: 解析 We have A(S)= _D√ (1+(f_x)^2+(f_y)^2). But if |f_x|≤q 1 and |f_y|...