value(mathematics 数) number or quantity represented by a letter 值; 数值 b的三次方=1331 b就是11 a是9，c是13 ac=117
Given that a,b,c are positive real numbers with a+b+c=3, find the minimum value of 1a+1b+1c. 相关知识点: 试题来源: 解析 3 From the given conditions, we know that 31a+1b+1c≤a+b+c3 31a+1b+1c≤1 1a+1b+1c≥3反馈 收藏 ...
百度试题 题目Given that可以用来引导___从句? A.原因状语B.条件状语C.同位语D.主语E.定语相关知识点: 试题来源: 解析 A,B 反馈 收藏
14 When a=-|||-6=3,9-12+m =0,that is,m 3,so the-|||-equation is x2-4x+3 =0,and the solutions are-|||-x=3,x2=1,therefore a =b=3,c=1.In this-|||-case,C△=3+3+1=7.When a=c=3,m=3,-|||-so the equation is x2 -4x +3 =0,and the-|||-solutions are...
and c are real numbers, and(ab)/(a+b)=1/3 (bc)/(b+c)=1/4 (ca)/(c+a)=1/5 cue(abc)/(ab+bc+ca) (2) Suppose that non-zero real numbers a, b, and c satisf_ythat(2a^2)/(1+a^2)=b (2b^2)/(1+b^2)=c ,(2c^2)/(1+c^2)=ahe values of a, b, and ...
(1) Given that a, b, and c are real numbers, and aba+b=13, bcb+c=14, cac+a=15, evaluate abcab+bc+ca.(2) Suppose that non-zero real numbers a, b, and c satisfy that 2a21+a2=b, 2b21+b2=c, 2c21+c2=a, find the values of a, b, and c. 答案 (1) Since aba+...
Given that A=a+3b, B=4b, C=ab, when a=2, b=6, calculate: B−A. AC−B. 相关知识点: 试题来源: 解析 (1) 4. (2) 216. (1) a=2, b=6, therefore, A=2+18=20, B=4b=4×6=24, C=a×b=2×6=12, B−A=24−20=4. (2) AC−B=20×12−24=240...
If X = a + b,Y= a - b,C = a × b,D = b²,calculate X + Y,C - X,X × Y + D and X² - 2C 相关知识点: 试题来源: 解析 (1) 8、2、25、16. (2) 10,7,25,34. (1) 8、2、25、16. (2) 先算出A=8,B=2,C=15,D=9,再算出对应的结果:A+B=10,C−A=7...
百度试题 结果1 题目【题目】Given that A=a+3b,B=4b,C=ab, when a=2, b=6, calculate:B-A.AC-B. 相关知识点: 试题来源: 解析 【解析】(14.(2)216. 反馈 收藏
结果1 题目 Given that points A, B and C are on the same line, A B = 15 cm, B C = 12 cm, and M is the midpoint of AC, then the length of segment AM is cm. 相关知识点: 试题来源: 解析 1.5 or 13.5 反馈 收藏 ...