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• • • Radian
    • Radicals
    • Random
    • Rank
    • Reshape
    • Ratio test
    • Rational
    • Rationalizing a denominator
    • Real numbers
    • Rectangular coordinates
    • Recursion
    • Relatively prime
    • Remainder
    • Replacing a selection
    • Reshape
    • Residue
    • Restoring definitions
    • Riemann sum
    • Root test
    • Root
    • Row basis
    • RSA algorithm