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Olegator [25]
2 years ago
8

3+3 what is it i need help please

Mathematics
1 answer:
Aleksandr [31]2 years ago
3 0
6 fooo take this down
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derivation of the formula for the sum of n terms
Progression, S
S=a1+a2+a3+a4+...+an

S=a1+(a1+d)+(a1+2d)+(a1+3d)+...+[a1+(n−1)d]   →   Equation (1)

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S=n/2{a1+[a1+(n−1)d]}
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Step-by-step explanation:  

Hopefully this helps you :)

pls mark brainlest ;)

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