Find whether f(x) is one-one or many-one & into or onto if f:D->R where D is its domain. `f(x)=3/4x^2-cospix`

Find whether f(x) is one- one or many-one & into or onto if f:D rarr R where D is its domain and f(x)=x+1/x.

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=x cos x

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=x cos x

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=1/(sinsqrt(|x|))

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=1/(sinsqrt(|x|))

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=|lnx|

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=|lnx|

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=sin4x:(-(pi)/4,(pi)/4)to(-1,1)

Find whether the following function are one-one or many -one & into or onto if f:DtoR where D is its domain f(x)=(1+x^(6))/(x^(3))