Find if this function is surjective or injective : f(x) =e^x

The function is both injective and surjective.

Step-by-step explanation:

Given function,

We say a function is injective(one-one) when for every value of x we have a unique value of y.We say a function is surjective(onto) when the output y covers all the values of the co domain.

We know that in the graph of at no two points of x there can be a common y. So hence proved that is injective.

is also surjective because for x from - infinity to + infinity covers all the values in its co domain hence it is also surjecctive function.

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.