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A Level maths question help


Jadid
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(@jadid-2)
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I don’t understand the solution.

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Further_Maths_Student
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(@further_maths_student)
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Then the second step they factorised out h

Then you just use the formula for the sum to infinity of geometric sequence

The reason its sum to infinity, its because we want it until the last bounce. We don't know when the last bounce is, so we just substitute it "to infinity"

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