castor6028 castor6028
  • 15-12-2017
  • Mathematics
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Write cos^4x as an equivalent expression that does not contain powers of trigonomretric functions greater than 1

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alekos
alekos alekos
  • 15-12-2017
cos^{4}x [/tex] = [tex] cos^{2}x.cos{2}x [/tex] = (cos2x+1)(cos2x+1)/4

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