Answer:
the first one is (x-4)/(3-x)
the second one is not x<3; x>3
Step-by-step explanation:
anyone know the second one?
Answer:
The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.
Step-by-step explanation:
Answer:
A) 100 x (4/5)
Step-by-step explanation:
Spent a total of 100 dollars, all being the same price
Each is 20 dollars.
For 4 pairs it would be 80.
100 x (4/5) = 80
Answer:
Cool kick studio is cheaper unless you are going to take more than 12 lessons. They are equal in price when you take 12 lessons.
Answer:
sin 5x cos x - cos 5x sin x = sin(4x)
Step-by-step explanation:
Given that the trigonometric expression,
sin 5x cos x - cos 5x sin x
Here we use the "sum and difference formulas"
Sum and Difference Formulas
sin(A+B)=sin A cos B + cos A sin B
sin(A-B)=sin A cos B - cos A sin B
cos(A+B)=cos A cos B - sin A sin B
cos(A-B)=cos A cos B + sin A sin B
So,
sin 5x cos x - cos 5x sin x = sin (5x - x)
sin 5x cos x - cos 5x sin x = sin(4x)
That's the final answer.
