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What is the sum of the series?
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What is the sum of the series?

What is the sum of the series?-example-1
User Megidd
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1 Answer

6 votes

Answer:

60

Explanation:


\sum\limits_(i=1)^54i\to a_i=4i\\\\for\ i=1:\\\\a_1=4(1)=4\\\\for\ i=2:\\\\a_2=4(2)=8\\\\for\ i=3:\\\\a_3=4(3)=12\\\\for\ i=4:\\\\a_4=4(4)=16\\\\for\ i=5:\\\\a_5=4(5)=20\\\\\sum\limits_(i=1)^54i=4+8+12+16+20=60

User Pavel Zimogorov
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6.0k points
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