若IX-2I+IY-3I=0求2X平方-Y+1的值
问题描述:
若IX-2I+IY-3I=0求2X平方-Y+1的值
答
X=2
Y=3
2X平方-Y+1=2*4-3+1=8-3+1=6
答
x=2
y=3
2X平方-Y+1=8-3+1=6
答
因为|X-2|+|Y-3|=0
所以 X-2=0 ;Y-3=0
X = 2 ;Y = 3
所以2X²-Y+1
= 2×2²-3+1
= 8-3+1
= 6
答
IX-2I+IY-3I=0
x-2=0 x=2
y-3=0 y=3
2x^2-y+1
=8-3+1=6