What is the domain of the function f(x) = cos-1(x – 2) ?
[ - 1, 1]
[1, 3]
[0, 5]
[ - 2, 1]
B.
[1, 3]
As we know the range of the function cosx for any value of x is [- 1, 1]
As here in the question the given function is f(x) =
So the domain of f(x) is
So, the domain of the function f(x) = cos-1(x – 2) is [1, 3]
Let y = 3x2 + 2. If x changes from 10 to 10.1, then what is the total change in y ?
4.71
5.23
6.03
8.01
If f(x) = 3x2 – 5x + p and f(0) and f(1) are opposite in sign, then which of the following is correct ?
-2 < p < 0
-2 < p < 2
1 < p < 2
3 < p < 5