Answer:
False,
False,
True,
False
Step-by-step explanation:
1) f is not one to one:
example: /pie nit equal to 2/pie but,
sin(/pie)=sin(2/pie)=0.
2) f is not onto in R, becose sinx is not for example 2, or any other real number greater then 1.
3) is true
4) for any x e^x is positive, so g: R—>R, so e^x will never be for example -5 which is real number:)
