1.

A function whose graph is symmetrical about the y-axis is given by:

Answer»

`f(x)=sin[log(x+sqrt(x^(2)+1))]`
`f(x)=(SEC^(4)x+cosec^(4)x)/(x^(3)+x^(4)cotx)`
`f(x+y)=f(x)+f(y)AA x, y in R`
`f(x)-x^(2)`

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