Methods for solving cubic equations appear in The Nine Chapters on the Mathematical Arta Chinese mathematical text compiled around the 2nd century BC and commented on by Liu Hui in the 3rd century. Some others like T. Heathwho translated all Archimedes ' works, disagree, putting forward evidence that Archimedes really solved cubic equations using intersections of two conicsbut also discussed the conditions where the roots are 0, 1 or 2. In an early paper, he discovered that a cubic equation can have more than one solution and stated that it cannot be solved using compass and straightedge constructions.

Standard Deviation showed up on the December ACT, but you can use your calculator see link to solve. Mean is the same as average. Median is the number in the middle after rearranging from low to high. In the case that the list has no true middle because it has an even number of terms, find the average of the middle two.

Multiple modes are possible if there is a tie for greatest frequency: To calculate the median of an odd number of terms, simply add 1 and divide by 2.

Integers are whole numbers, including zero and negative whole numbers. Think of them as hash marks on the number line. Remember that -3 is less than -2, not the other way around sounds simple but is a common mistake.

Prime numbers are positive integers that are only divisible by themselves and the number 1. Be able to list all the primes you between 1 and 50…remember that 1 is not a prime and there are no negative primes.

By the way, 51 is not prime…that question actually showed up on a recent SAT. What, you forgot your times tables for 17? The prime factorization of 18, for example, is 3 x 3 x 2. These are particular types of Right Triangles that just happen to have exact integers as sides.

The SAT loves to use them, so know them by heart and save yourself the trouble of calculating all those roots. Here are the ones they use: Digits are to numbers what letters are to words. There are only 10 possible digits, 0 through 9. For example the multiples of 5 are 5,10,15,20 etc.

The factors of x are the answers I get when I divide x by another integer. For example the factors of 60 are 30, 20,15,12,10,6,5,4,3,2,1, as well as -5,-6, etc.

Remainder is particularly helpful on pattern and sequence problems. Consecutive integers are integers in order from least to greatest, for example 1,2,3. The ACT may also ask for consecutive even or odd integers. For example -6,-4,-2, 0, 2, 4 etc yes zero is even or 1, 3, 5 etc.

Sum means the result of addition. Difference is the result of subtraction. The result of multiplication. Do not confuse with sum! Even numbers are all the integers divisible by 2, and odd numbers are all the other integers. Zero is neither negative nor positive.You can solve for x by using the square root principle or the quadratic formula (if you simplify the problem into the correct form).

Step 4: Graph the parabola using the points found in steps 1 – 3. Step 1: Find the vertex.

Since the equation is in vertex form, the vertex will be at the point (h, k). Step 2: Find the y-intercept. To find. Graphing Quadratic Equations. A Quadratic Equation in Standard Form (a, b, and c can have any value, except that a can't be 0.)Here is an example: Graphing. You can graph a Quadratic Equation using the Function Grapher, but to really understand what is going on, you can make the graph yourself.

Read On! The Simplest Quadratic. The simplest Quadratic Equation is. Explore math with grupobittia.com, a free online graphing calculator.

When looking at the equation of the moved function, however, we have to be careful.. When functions are transformed on the outside of the \(f(x)\) part, you move the function up and down and do the “regular” math, as we’ll see in the examples grupobittia.com are vertical transformations or translations, and affect the \(y\) part of the function.

are the real solutions, if they exist, of the quadratic equation quadratic functions in vertex form. Quadratic Functions Transformations Derivatives of Quadratic Functions: Explore the quadratic function f(x) = ax 2 + b x + c . An example of a Quadratic Equation: Quadratic Equations make nice curves, like this one: Name.

The name Quadratic comes from "quad" meaning square, because the variable gets squared the Standard Form of a Quadratic Equation is. ax 2 + bx + c = 0. But sometimes a quadratic equation doesn't look like that! For example: In .

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