Give the sum of the first 'n' terms of a geometric series, given 'a' as the first term and 'r' as the ratio.
radius of a spherical planet
Is the input divisible by 3?
Transpose of matrix
Say type of roots in quadratic equation
Ratio between sum of primer numbers and non-prime numbers
Check if is a square
Get the value 100
Approximate the inverse tangent by power series
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