Answers

2015-07-02T21:40:02+08:00
An=a1rn-1
3=3/4r3-1
3=3/4r2
3÷3/4=3/4÷3/4r2
√4=√r2
2=r

find the 1st term:

an=a1rn-1
3/4=a1(2)1-1
3/4=a1(2)
3/4÷2=a1(2)÷2
3/8=a1
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