What is sum from n=1 to 42 of 2n-2 ?

The solution to sum from n=1 to 42 of 2n-2 is 1722

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Evaluate Using Summation Formulas sum from n=1 to 42 of 2n-2

n = 1 \sum 42 2 n - 2

1722

Solution steps

n = 1 \sum 42 2 n - 2

Apply the Sum Rule:

\sum a_{n} + b_{n} = \sum a_{n} + \sum b_{n}

= n = 1 \sum 42 2 n - n = 1 \sum 42 2

n = 1 \sum 42 2 n = 1806

n = 1 \sum 42 2 = 84

= 1806 - 84

= 1722

D, D = \frac{( 40.5 g )}{( 15 m l )}

x (x - 1) = 0

5 x^{2} - 32 x + 12

x, 8 x - 5 = 6 x + 3

x, 3^{x} = 30

What is sum from n=1 to 42 of 2n-2 ?
The solution to sum from n=1 to 42 of 2n-2 is 1722