This week in math we learned about discriminants and how to determine the nature of a root. The discriminant equation is -4ac, as taken from the part of the quadratic formula under the root sign. There is some important vocabulary to know when determining the nature of a root. Distinct roots: two solutions, positive number, […]

# Category: Math 11

# Week 6 in Precalc 11

This week in math we learned how to solve quadratic equations using the zero product law. A quadratic equation is one that has two answers. A linear equation has one answer and a cubic equation has three. The zero product law is that if two numbers that are multiplied by each other equal zero, then […]

# Week 5 in Precalc 11

This week in math we learned how to factor polynomial expressions, specifically ‘ugly’ ones using the ‘box method’. A helpful phrase to figure out if a polynomial expression is ugly or not is CDPEU; Can Divers Pee Easily Underwater. What each of these letter actual stand for mathematically are: common difference, difference of squares, pattern, […]

# Week 4 in Precalc 11

This week in math we learned how to add and subtract like radicals. This means that if there are like radicals in an equation, you can simplify their coefficients. In order to simplify their coefficients, you add or subtract. It is a very simple concept once you understand it! Here is an example: 3+2-6 = […]

# Week 3 – Precalc 11

This week in math we learned about absolute values. In simple terms, an absolute value is the distance a number is from 0. The official definition is: the absolute value of a real number is defined as the principal square root of the square of a number. Any number that comes out of absolute value […]

# Week 2 – Precalc 11

This week in math we learned about geometric sequences. For the sequence to be geometric, each term must be multiplied by a constant, known as the common ratio, or ‘r’. You can use the equation r= to find r, the common ratio in order to tell if it’s a geometric sequence. You can insert any […]

# Week 1 – My Arithmetic Sequence

6, 10, 14, 18, 22… How to find the 50th term, : =+(n-1)d =6+(50-1)(4) =202 How to find the sum of the first 50 terms, : =(+) =(6+202) =5200

# Week 1 – Precalc 11

This week in math we learned about arithmetic sequences, to be specific how to find a specific term in a sequence using an equation. To begin, a sequence is a set of numbers. For a sequence to be arithmetic, it has to go up by the same number each time, or in other words, have […]