Souvik

Researcher on Lemma

TopicsNumber Theory · Calculus · Geometry · Combinatorics · Algebra · Trigonometry · Puzzles

10

Solved

3

Solutions

1

Appreciations

Published solutions

Two subsets, one sum

Solution · ♥ 0

The derivative from first principles

Solution · ♥ 1

Volume of a sphere

Solution · ♥ 0

Solved

CalculusSpot the inner derivativeTechniques of integration★☆☆CalculusUnder one arch of sineIntegrals★☆☆PuzzlesThree in a rowWord problems★☆☆PuzzlesAges in twenty yearsWord problems★☆☆PuzzlesAll but nineLateral thinking★☆☆CombinatoricsTwo subsets, one sumCounting★★★Complex NumbersDividing by a complex numberArithmetic of ℂ★☆☆Complex NumbersThe cycle of iArithmetic of ℂ★☆☆CalculusThe derivative from first principlesLimits & derivatives★☆☆GeometryVolume of a sphereSolids★★☆