Answer:
Step-by-step explanation:
Using the product to sum formula
sinxcosy = [ sin(x + y) + sin(x - y) ] , then
2sinxcosy = sin(x + y) + sin(x - y)
Given
2sin75°cos15° ← with x = 75 and y = 15 , then
= sin(75 + 15) + sin(75 - 15)
= sin90° + sin60°
= 1 +
=
Answer:
NO
Step-by-step explanation:
3x + 1 and 3x are different
Step 1: Lets put some numbers instead of x
x = 1
y = 3x + 1
y = 3(1) + 1
y = 4
y = 3x
y = 3(1)
y = 3
SEE IT IS DIFFERENT.
Attached are the graphs
Answer:
C. The given function is continuous at x=4 because the limit is 2.
Step-by-step explanation:
Given the function:
We are to determine if the function is continuous at x=4.
For a function to be continuous at some value c in its domain:
Now: at x=4
Since the two values are the same, we say that f(x) is continuous at x=4.
The correct option is C.