sin2x - 2*sinx*cosx, cos2x - 1-2sin2x, sin(-x) - -sinx, cos(-x) - cosx, tg(-x) - -tgx, ctg(-x) - -ctgx, sin (a+b) - sin a*cos b+sin b*cos a, sin(a-b) - sin a *cos b -sin b*cos a, cos (a+b) - cos a*cos b-sin a*sin b, cos (a-b) - cos a*cos b+sin a*sin b, (a+b)2 - a2+2*a*b+b2, (a-b)2 - a2-2*a*b+b2, (a+b)(a-b) - a2-b2, (a+b+c)2 - a2+b2+c2+2ab+2bc+2ac, (a+b)3 - a3+3a2b+3ab2+b3, (a-b)3 - a3-3a2b+3ab2-b3, a3-b3 - (a-b)(a2+ab+b2), a3+b3 - (a+b)(a2-ab+b2), logaxy - logax+logay, logaxn - n*logax, loga1 - 0, logaa - 1, logaar - r, a*logax - x,
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Formule matematica
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