若实数x,y满足x/(3^3+4^3)+y/(3^3+6^3)=1,x/(5^3+4^3)+y/(5^3+6^3)=1,则x+y=______
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 02:44:50
x){ѽyϦnЩ|{m+5㌵M5+!l3 P(c$cy1B6lib~
\Kuu?nh}>YDŽ+y>ٴWt,A2n&PœK-ةgu
OM/3 ZTRV*@Z`
ϧl|9ً}|BP=@> g
@w6[&F6yv Ў
若实数x,y满足x/(3^3+4^3)+y/(3^3+6^3)=1,x/(5^3+4^3)+y/(5^3+6^3)=1,则x+y=______
若实数x,y满足x/(3^3+4^3)+y/(3^3+6^3)=1,x/(5^3+4^3)+y/(5^3+6^3)=1,则x+y=______
若实数x,y满足x/(3^3+4^3)+y/(3^3+6^3)=1,x/(5^3+4^3)+y/(5^3+6^3)=1,则x+y=______
可以把3^3、5^3看成关于t的方程x/(t^3+4^3)+y/(t^3+6^3)=1的两根, 化简得t^2-(x+y-4^3-6^3)t-(6^3x+4^3y-4^3*6^3)=0 由韦达定理得:3^3+5^3=x+y-4^3-6^3, 所以x+y=3^3+4^3+5^3+6^3=432
如果实数x,y满足x-4y+3
已知实数x,y满足约束条件x+y>3,y
设实数x,y满足3
设实数x,y满足3
不等式:设实数x,y满足3
.如果实数x,y满足 x-4y+3最小值3,那么实数k=?
已知实数xy满足|x|/4+|y|/3
若实数x,y满足不等式组{x+y≥2 {2x-y≤4 {x-y≥0 ,则2x+3y的最小值是?
设正实数x,y满足x^3+y^3=x-y,求证:x^2+4y^2
若实数x,y满足不等式x-y>=-1,x+y>=1,3x-y
若实数x,y满足不等式x-y>=-1,x+y>=1,3x-y
设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y
已知实数x,y满足(x+y)(x+y+3)-4=0则x+y的值是
若实数x,y满足约束条件x-y-2=0,2y-3
若实数x,y满足x-4y+3≤0,3x+5y-25≤0,x≥1,则2x-y的最大值是多少
若实数x,y满足x的平方+y的平方-4x-2y+5=0,则(x+y)/2x-3=
已知实数x、y满足x²-3x+4y=7,3x+4y的最大值为
已知实数x、y满足x²-3x+4y=7,3x+4y的最大值为