Answer:
ok...............................................................
D(1/x)/dx= d(x^-1)/dx
= -x^-2
the derivatives of the two cases you mentioned is as follows:
(I) f(x)=k/x
d{f(x)}/dx= k×(-x^-2)
= -kx^-2
(ll) f(x)=x/k
d{f(x)}= d(x/k)/dx
= 1/k
you can just simply take out the constant from the derivative and multiply it to the final answer of the derivative of the given function.
12/10 = 1.2
4/10 = 0.4
1.2-0.4 = 0.8
Answer:
original price - new price
300- 210=90
discount/ original price ×%
90/300×100
=30%
Answer:
1. B. a=14, b=2
2. D. a=1, b=1.4
Step-by-step explanation:
The exponential growth function can be represented as

where b is the growth factor.
1. When the function has equation

then

The initial amount is the value of the function at x=0:

The growth factor is b=2
2. When the function has equation

then

The initial amount is the value of the function at t=0:

The growth factor is b=1.4