y=sinx+2cosx
=√(a^2+b^2)sin(a+x)
=√(1+4)sin(a+x)
=√5sin(a+x)
化簡(jiǎn)y=sinx+2cosx
化簡(jiǎn)y=sinx+2cosx
數(shù)學(xué)人氣：631 ℃時(shí)間：2020-07-01 02:56:00
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