Add math function 求助

alehando

2012-10-7 03:58 PM

Given that h(x)=5x-3 and 2h(x)= h(x-1). Find the value of x.

谁会？教教我...附上working steps 感激不尽

眼镜megane

2012-10-7 04:06 PM

h(x)=5x-3 and 2h(x)= h(x-1)

h(x-1) = 5(x-1)-3 = 5x-8

2h(x) = 5x-8
2(5x-3) = 5x-8
10x- 6 = 5x-8
10x-5x = -8+6
5x = -2
x = -2/5
不知道是不是這樣做，太久沒做了

alehando

2012-10-7 04:41 PM

回复 2# 眼镜megane

嗯嗯和答案一样
谢谢你～

眼镜megane

2012-10-7 04:45 PM

回复 3# alehando

原來是那樣，謝謝你
哈哈哈哈哈哈

還有什麼問題嗎？

alehando

2012-10-7 04:51 PM

回复 4# 眼镜megane

没有了
^_^

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