About the maths question

2008-10-19 9:39 pm
Let a=b(c+d)
H=cd
Espress H in terms of a, b and d only.

回答 (3)

2008-10-19 10:23 pm
✔ 最佳答案
H=(ad/b)-d^2

Hope I can help you.
參考: my maths knowledge
2008-10-19 9:54 pm
a= b( c+d )

a= bc + bd

a-bd = bc

c = (a-bd) / b

then H = [ d(a-bd) ] / b
2008-10-19 9:50 pm
a=b(c+d)
a/b=c+d
(a/b)-d=c

H=cd
H=[(a/b)-d]*d
H=(ad/b)-d^2


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