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Úprava výrazu v matematice
Uprav výraz:
\( \large \Large \frac{1}{4}\large \left( {3cos^{2}x - sin^{2}x - 3} \right) \)
\( \large \Large \frac{1}{4}\large 4\left( {cos^{2}x + 1} \right) = cos^{2}x + 1 = sin^{2}x \)
\( \large \Large \frac{1}{4}\large 4\left( {sin^{2}x - 1} \right) = sin^{2}x - 1 = -cos^{2}x \)
\( \large \Large \frac{1}{4}\large 4\left( {3cos^{2}x - 1} \right) = 3cos^{2}x - 1 = -3sin^{2}x \)
\( \large \Large \frac{1}{4}\large 4\left( {cos^{2}x - 1} \right) = cos^{2}x - 1 = -sin^{2}x \)