已知向量m=(sinx,3/4),n=(cosx,-1)当m//n时,求cos^x-sin2x(2)设函数f(x)=已知向量m=(sinx,3/4),n=(cosx,-1)(1)当m//n时,求cos^x-sin2x(2)设函数f(x)=2(m+n)·n,已知在△ABC中,内角ABC对边分别为abc,若a=根号3,b=2,sinB=根
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![已知向量m=(sinx,3/4),n=(cosx,-1)当m//n时,求cos^x-sin2x(2)设函数f(x)=已知向量m=(sinx,3/4),n=(cosx,-1)(1)当m//n时,求cos^x-sin2x(2)设函数f(x)=2(m+n)·n,已知在△ABC中,内角ABC对边分别为abc,若a=根号3,b=2,sinB=根](/uploads/image/z/3862166-14-6.jpg?t=%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fm%3D%28sinx%2C3%2F4%29%2Cn%3D%28cosx%2C-1%29%E5%BD%93m%2F%2Fn%E6%97%B6%2C%E6%B1%82cos%5Ex-sin2x%282%29%E8%AE%BE%E5%87%BD%E6%95%B0f%28x%29%3D%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fm%3D%28sinx%2C3%2F4%29%2Cn%3D%28cosx%2C-1%29%EF%BC%881%EF%BC%89%E5%BD%93m%2F%2Fn%E6%97%B6%2C%E6%B1%82cos%5Ex-sin2x%282%29%E8%AE%BE%E5%87%BD%E6%95%B0f%28x%29%3D2%EF%BC%88m%2Bn%EF%BC%89%C2%B7n%2C%E5%B7%B2%E7%9F%A5%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E5%86%85%E8%A7%92ABC%E5%AF%B9%E8%BE%B9%E5%88%86%E5%88%AB%E4%B8%BAabc%2C%E8%8B%A5a%3D%E6%A0%B9%E5%8F%B73%2Cb%3D2%2CsinB%3D%E6%A0%B9)
已知向量m=(sinx,3/4),n=(cosx,-1)当m//n时,求cos^x-sin2x(2)设函数f(x)=已知向量m=(sinx,3/4),n=(cosx,-1)(1)当m//n时,求cos^x-sin2x(2)设函数f(x)=2(m+n)·n,已知在△ABC中,内角ABC对边分别为abc,若a=根号3,b=2,sinB=根
已知向量m=(sinx,3/4),n=(cosx,-1)当m//n时,求cos^x-sin2x(2)设函数f(x)=
已知向量m=(sinx,3/4),n=(cosx,-1)
(1)当m//n时,求cos^x-sin2x
(2)设函数f(x)=2(m+n)·n,已知在△ABC中,内角ABC对边分别为abc,若a=根号3,b=2,sinB=根号6/3,求f(x)+4cos(2A+π/6) { x属于[0,π/3] }的取值范围
已知向量m=(sinx,3/4),n=(cosx,-1)当m//n时,求cos^x-sin2x(2)设函数f(x)=已知向量m=(sinx,3/4),n=(cosx,-1)(1)当m//n时,求cos^x-sin2x(2)设函数f(x)=2(m+n)·n,已知在△ABC中,内角ABC对边分别为abc,若a=根号3,b=2,sinB=根
cos^x-sin2x是啥意思?