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Mei
Mei asked in Science & MathematicsMathematics · 11 months ago

CALCULUS HELP? SIGMA NOTATION QUESTION? (will award best answer!)?

I've attached a picture of the question and I really need examples with numbers because i'm really having trouble understanding how and in what scenario multiplying those individual sums would not be equal to multiplying them mashed together???

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1 Answer

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  • alex
    Lv 7
    11 months ago
    Favourite answer

    example

    n=2

    Left side

    (a1+a2)(b1+b2) = a1b1+a2b2 + a1b2+a2b1

    Right side

    =a1b1+a2b2

    or

    n=2

    a1 = 1 , a2= 2

    b1 = 1 , b2 = 3

    left side

    (1+2)(1+3)=12

    Right side

    (1)(1)+(2)(3)=7

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