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C34 Tutorials - Edexcel International A Level (IAL) Rational Expressions Rational Expressions – Simplifying Partial Fractions Functions Working with Functions Graph Transformations and Asymptotes Trigonometric Graphs and Transformations Modulus Functions, Equations and Inequalities Sequences and Series Binomial Expansion Trigonometry Sec θ, Cosec θ and Cot θ Inverse trigonometric functions Identities & Equations – Pythagorean Type Identities

7-week old Pallas cat kitten at UK's Wildlife Heritage Foundation

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The sums of the reciprocals of the binomial coefficients over successive diagonals in Pascal’s triangle converge into beautiful patterns, apart from the first and second diagonal (which lead to the series 1 + 1 + 1 + 1 + … and the harmonic series, respectively). A proof of the identity can be found on cut-the-knot.org.

Media: watercolor on Saunders Waterford watercolor paper (300g) Size: 4"x6" Bird Name: Red-Headed Tit or Black-Throated Tit Binomial Name: Aegithalos Concinnus Others in the Series: &nb...