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If ` f: x ->y` defined by f(x) = ` sqrt3 sinx + cos x + 4` is one-one and onto, then x and y are given by |
Answer» `f(x)=sqrt3sinx+cosx+4` `=(sqrt(3+1)(sqrt3sinx)/(sqrt(3+1))+cosx/sqrt(3+1))+4` `=2(sinx*sqrt3/2+cosx*1/2)+4` `y=f(x)=2sin(x+30^@)+4` Option 2 is correct. |
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