Partial Fractions #11

There are three set up steps for partial fraction decomposition. 1. Divide if it is improper. 2. Factor he denominator. 3. If it is linear, add A,B,C...etc. If it is quadratic, add Ax+B, Cx+D...etc. Then, there are four steps for solving. 1. Multiply by the least common denominator. 2. Group the terms by powers of x. 3. Equate the coefficients. 4. Solve the system of equations. 

Graphing Systems of Inequalities #8

For graphing systems of Inequalities, there are three steps. 1. Graph each equation based upon if it is a line, parabola, or circle. The equation for a line is y=mx+b. The equation for a parabola is y=(x-h)^2+k. The equation for a circle is x^2+y^2=r^2. 2. Pick a test point not on the line. 3. Shade the plane containing the test point, if the test point satisfies the equation, shade the other plane if it does not. 

Sequences and Series #9

A sequence is a particular order in which related events, movements, or things follow each other. A series is a number of things, events, or people of a similar kind or related nature coming one after another. There are two types of series: arithmetic and geometric. Arithmetic is when numbers are added or subtracted. To find the sum of an arithmetic series, use the formula Sn=n(a1+a2/2). To fund the sum of a geometric series, use the formula Sn=a1(1-r^2)/1-r. Geometric is when numbers are multiplied or divided. 

Tower of Hanoi-Mathematical Induction #10

In this project, I learned how to do mathematical induction. It was difficult to get all the numbers from the rings, because my screen kept freezing, but when I did get them, I did not realize how many moves it took to complete each step. I decided to move the first ring to the ring beside it because that was the only available place. For me, this game just seemed to be to put the ring wherever it fit, there was not rhyme or reason. Mathematical induction helped us to prove that the equation we came up with for the project was true, because when we plugged in certain variables, they worked. Step one proved that n=1 which was helpful, because we then knew we were on the right track. In step two, we proved that (k+1) was true, therefore proving that our entire equation was true and proven correct. I learned that the recursion formula can be very helpful in terms of plugging in that set for a longer part of the equation. We know that using mathematical induction can help prove something, because if we plug a 1 into each side and they come out equal, then our equation is correct. 

Cramer's Rule #7

Cramer's Rule is a lot easier to use when finding the determinant of each variable. In order to find each determinant, first find the common determinant. Then, substitute the solutions given for the first column and solve for the determinant. Next, substitute the solutions given for the second column and change the first back to its original numbers and solve for the determinant. To find the determinant of X, put the first determinant you found over the common determinant. To find the determinant of Y, out the second determinant you found over the common determinant. 

Systems of Equations #6

An inconsistent equation means there is no solution and the lines are parallel. A consistent equation means that there is an answer and if there is one solution, then it is independent, but if there are infinite solutions then it is dependent. There are two methods to solving equations; substitution of elimination. The first step for substitution is to solve one equation for one variable. Then,substitute that variable into the other equation. Next, solve for the variable. Lastly, go back and substitute to find the second variable. The first step for elimination is to interchange any two equations. Next, multiply by a constant number. Finally, add one equation to the other to eliminate a variable. 

Graphs of Polar Equations #5

To find the vertices of an ellipse or parabola, use theta=0,pi. To find the vertex of a parabola, use either theta=0 or theta=pi. These are for the horizontal axis, cos. For the vertical, sin, in order to find the vertices of an ellipse or parabola, plug in theta=pi/2 and 3pi/2. To find the vertex of a parabola, use either theta=pi/2 or theta=3pi/2. Also find x or y intercepts.