已知f(x)=-2asin(2x+π/6)+2a+b,x属于R, a,b为常数,且a>0,f(x)的值域为[-3,5],a=? b=?
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![已知f(x)=-2asin(2x+π/6)+2a+b,x属于R, a,b为常数,且a>0,f(x)的值域为[-3,5],a=? b=?](/uploads/image/z/8901527-23-7.jpg?t=%E5%B7%B2%E7%9F%A5f%28x%29%3D-2asin%282x%2B%CF%80%2F6%29%2B2a%2Bb%2Cx%E5%B1%9E%E4%BA%8ER%2C+a%2Cb%E4%B8%BA%E5%B8%B8%E6%95%B0%2C%E4%B8%94a%3E0%2Cf%28x%29%E7%9A%84%E5%80%BC%E5%9F%9F%E4%B8%BA%5B-3%2C5%5D%2Ca%3D%3F+b%3D%3F)
已知f(x)=-2asin(2x+π/6)+2a+b,x属于R, a,b为常数,且a>0,f(x)的值域为[-3,5],a=? b=?
已知f(x)=-2asin(2x+π/6)+2a+b,x属于R, a,b为常数,且a>0,f(x)的值域为[-3,5],a=? b=?
已知f(x)=-2asin(2x+π/6)+2a+b,x属于R, a,b为常数,且a>0,f(x)的值域为[-3,5],a=? b=?
sin(2x+π/6)的范围在[-1,1]
-2asin(2x+π/6)的范围在[-2a,2a]
-2asin(2x+π/6)+2a+b的范围在[-2a+2a+b,2a+2a+b]即[b,4a+b]=[-3,5]
b=-3,a=2
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