solve the questuion pls.
圖片參考：http://imgcld.yimg.com/8/n/HA00416797/o/701004070113013873381280.jpg
thanks
F.4 Maths Variations
2010-04-08 12:44 am
回答 (1)
2010-04-08 1:12 am
✔ 最佳答案
z=p+q=kx+c/(y^0.5) where k and c are constants
when x=3,y=4,z=24
24=3k+c/2
when x=-1,y=36,z=0
0=-k+c/6
k=c/6
combine two equations,
c=24 and k=4
so z=4x+24/(y^0.5)
put z=24 and y=16
24=4x+24/4
so x=4.5
參考: myself studying in AL pure maths
收錄日期: 2021-04-23 22:02:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100407000051KK01130