How do you write the first five terms of the geometric sequence #a_1=3, r=sqrt5#?

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Answer 1 · 2017-09-04T19:19:56

#{3,3sqrt5,15,15sqrt5,75}#

a GP is generated by multiplying the previous term by the common ration.

Starting with the first term given.

#a_1=3#

#a_2=3xxsqrt5=3sqrt5#

#a_3=3sqrt5xxsqrt5=3xx5=15#

#a_4=15xxsqrt5=15sqrt5#

#a_5=15sqrt5xxsqrt5=15xx5=75#