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Consider \( \cos ^{n} x-\sin ^{n} x=1 \), where \( n \) is a natura... (PW Solutions) View |
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Consider \( \cos ^{n} x-\sin ^{n} x=1 \), where \( n \) is a natura... (PW Solutions) View |
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Cool problem from the 1961 International Maths Olympiad | cos^n(x) - sin^n(x) = 1 | Maths for fun (Leo Schafer) View |
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DeMoivre's Theorem Induction Proof: (cos(x) + isin(x))^n = cos(nx) + isin(nx) (The Math Sorcerer) View |
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L'hopital's rule (The Organic Chemistry Tutor) View |
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sin(n) does not converge - an elementary proof (Dr Barker) View |
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The determinant `Delta=|(a^2,a,1),(cos(nx),cos (n + 1) x,cos(n+2) x),(sin(nx),sin (n +1)x,sin ... (Doubtnut) View |
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sin(n) is dense! (Michael Penn) View |
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If `I (m (Doubtnut) View |
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Prove that (cosh(x) + sinh(x))^n = cosh(nx) + sinh(nx) (The Math Sorcerer) View |