For the following exercises, vector u is given. Find the angle θ ∈ [ 0 , 2 π ) that vector u makes with the positive direction of the x -axis, in a counter-clockwise direction. 35. u = 5 2 i − 5 2 j
For the following exercises, vector u is given. Find the angle θ ∈ [ 0 , 2 π ) that vector u makes with the positive direction of the x -axis, in a counter-clockwise direction. 35. u = 5 2 i − 5 2 j
For the following exercises, vector u is given. Find the angle
θ
∈
[
0
,
2
π
)
that vector u makes with the positive direction of the x-axis, in a counter-clockwise direction.
35.
u
=
5
2
i
−
5
2
j
System that uses coordinates to uniquely determine the position of points. The most common coordinate system is the Cartesian system, where points are given by distance along a horizontal x-axis and vertical y-axis from the origin. A polar coordinate system locates a point by its direction relative to a reference direction and its distance from a given point. In three dimensions, it leads to cylindrical and spherical coordinates.
PLEASE SOLVE STEP BY STEP WITHOUT ARTIFICIAL INTELLIGENCE OR CHATGPT
SOLVE BY HAND STEP BY STEP
4.- A beer at an unknown temperature is introduced into a refrigerator that has a constant temperature of 1°C. After 20 minutes, the temperature of the beer is 10°C, and after 40 minutes, the temperature of the beer is 6°C.
a) Determine the temperature at which the beer was placed inside the refrigerator.b) How long will it take for the beer to reach 2°C?
PLEASE SOLVE STEP BY STEP WITHOUT ARTIFICIAL INTELLIGENCE OR CHATGPT
SOLVE BY HAND STEP BY STEP
5.- It is known that the population of a certain community increases at a rate proportional to the number of people at any given moment. If the population doubled in 5 years:
a) How long will it take to triple?b) How long will it take to quadruple?