>
数学
>
实数x,y,m满足:
3x+5y−2−m
+
2x+3y−m
=
x−199+y
•
199−x−y
,则m=( )
A. 100
B. 200
C. 201
D. 2001
人气:225 ℃ 时间:2020-04-23 04:42:26
解答
依题意,得
x−199+y≥0
199−x−y≥0
,解得x+y=199,
∴
3x+5y−2−m
+
2x+3y−m
=0,
∴
x+y=199
3x+5y−2−m=0
2x+3y−m=0
,
解方程得
x=396
y=−197
m=201
.
故选C.
推荐
实数x,y,m满足:3x+5y−2−m+2x+3y−m=x−199+y•199−x−y,则m=( ) A.100 B.200 C.201 D.2001
实数x,y,m满足:3x+5y−2−m+2x+3y−m=x−199+y•199−x−y,则m=( ) A.100 B.200 C.201 D.2001
若M满足关系式√3X+5Y-2-M+√2X+3Y-M=√X-199+Y*√199-X-Y,试求M的值
若m适合关系式,则√3X+5y-2-m+√2X+3y-m=√X-199+y乘以√199-X-y试确定m的值
若m满足关系式 根号(3x+5y-2-m)+根号(2x+3y-m)=根号(x-199+y)*根号(199-x-y),试求m的值
对任意正整数n,设计一个程序求s=1+1/2+1/3+…+1/n的值.
《伤仲永》原文及翻译
I spend an hour reading books in the library every day.(改为同义句) ( ) ( ) me an hour ( ) ( )
猜你喜欢
英语翻译
someone is singing in the next room.同义句转换 ( ) ( ) someone singing in the next room
解二道一元二次方程,1.X²+3=2√3 ̄ X 2.3y²+4=y²
矩阵求导
Jim will play the violin at the party.的同义句 Jim __ __ __ play the violin at the party.
live on the 住在墙上?
The doctor says I am a little fat and can't eat too many.(改错)
小学四年级上册语文园地六的作文(写生活中的真事)
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版