Precalculus Examples

Evaluate the Summation sum from i=1 to 20 of -3i+33
Step 1
Split the summation into smaller summations that fit the summation rules.
Step 2
Evaluate .
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Step 2.1
The formula for the summation of a polynomial with degree is:
Step 2.2
Substitute the values into the formula and make sure to multiply by the front term.
Step 2.3
Simplify.
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Step 2.3.1
Add and .
Step 2.3.2
Multiply by .
Step 2.3.3
Divide by .
Step 2.3.4
Multiply by .
Step 3
Evaluate .
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Step 3.1
The formula for the summation of a constant is:
Step 3.2
Substitute the values into the formula.
Step 3.3
Multiply by .
Step 4
Add the results of the summations.
Step 5
Add and .