solve the following simultaneous linear equation
3a+3b-2=5a+b=2A+2b-3
simplify the following expressions by using trigonometric identity
1 over 1+tan2次θ+ sin2次θ
中二數學題
2009-08-07 5:54 am
回答 (1)
2009-08-07 6:58 am
✔ 最佳答案
{3a+3b-2=5a+b______1{5a+b=2a+2b-3______2
{b-1=a_______3
{3a=b-3______4
Put (3) into (4)
3(b-1)=b-3
3b-3=b-3
b=0
Put b=0 into (3)
a=-1
參考: me
收錄日期: 2021-04-13 16:46:31
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https://hk.answers.yahoo.com/question/index?qid=20090806000051KK02578