The derivative of the function f(x) is:
We are given a function f(x) as:
We have:
( Since,
)
Hence, we get:
Also, by using the definition of f'(x) i.e.
Hence, on putting the value in the formula:
Hence, the derivative of the function f(x) is:
Rachel and her sister Fran together can paint the living room in hours
Given that
Rachel can paint half of the living room in 1 hour
Fran can paint th part of the living room in 1 hour
Let's assume together they paint the living room in x hours
⇒ together they can paint th part of the living room in 1 hour
By proportions,
⇒+
=
{using operation proportions and addition}
⇒=
⇒x=
⇒ together they can paint th part of the living room in 1 hour
It means, Rachel and her sister Fran together can paint the living room in hours
Learn more about paint here:
#SPJ9