find the sum of 3 upon root 5 + root 5 + 7 root 5 +...to 15 term
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question mistake
it will be 7/√5
now after omitting mistake it will be come an A.P
now common difference is
√5-3/√5=7/√5-√5=2/√5
now sum of terms in A.P is
S=n/2(2a+(n-1)d)
Putting value of n=15 a=3/√5 and d=2/√5 in above situation we get
S=15/2(2√3/5+(15-1)√2/5)
it will be 7/√5
now after omitting mistake it will be come an A.P
now common difference is
√5-3/√5=7/√5-√5=2/√5
now sum of terms in A.P is
S=n/2(2a+(n-1)d)
Putting value of n=15 a=3/√5 and d=2/√5 in above situation we get
S=15/2(2√3/5+(15-1)√2/5)
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