Answer:
2
Step-by-step explanation:
From the graph, we obtain the trigonometric function as:

The corresponding cosine function have equation.

This function is of the form: 
where
is the amplitude.
Therefore the amplitude is |2|=2
The third choice is correct
Answer:
(x, y) = (1, 4)
Step-by-step explanation:
Given: x+y=5 and 2x-y=-2
Solve for y and x
x+y=5; solve for y
y = 5 - x; substitute into other equation
2x-y= -2
2x - (5 - x) = -2
2x - 5 + x = -2; combine x's
3x - 5 = -2; add 5 to both sides
3x =3; divide by 3
x = 1; use this to solve for y
x+y=5
1 + y = 5; subtract 1 from both sides
y = 4
(x, y) = (1, 4)
Answer:
(a) $1.92
(b) $11.68
(c) $19.21
Step-by-step explanation:
The tax is the product of the tax rate (7.5%) and the taxed amount.
__
<h3>(a)</h3>
0.075 × $25.55 ≈ $1.92
<h3>(b)</h3>
0.075 × $155.75 ≈ $11.68
<h3>(c)</h3>
0.075 × $256.18 ≈ $19.21
_____
It is convenient to use a calculator for these values. A suitable calculator can do the rounding for you.


At the point
, we have

Denote by
the partial derivative of a function
with respect to the variable
. We have

The Jacobian is

By the chain rule,






Answer:
/kjbk;jblgjvjlvbjh,b
Step-by-step explanation: