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This video and the exercises revise quadratic number patterns and teach about arithmetic sequences. If you would like to do more revision, look at the Grade 11 section.
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Sigma notation can looking scary, but it's actually pretty easy. As long as you know what the sign means, you will be fine.
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Finding the sum of a series is an important part of this section.
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And now let's move on to geometric number patterns...
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And geometric series...
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And finally, infinite geometric series...
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