PRE - CALCULUS

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work.

Sn: 2+5+8+...+(3n-1)=n(1+3n)/2

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  1. S1 = 1(4)/2 = 2 check
    S2 = 2+5 = 7 = ? 2(7)/2 = 7 check
    S3 = 7+8 = 15 = ? 3 (1+9) /2 = 3*5 = 15 check

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  2. Thank you so much !

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  3. You are welcome.

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