David Jia
Academic Tutor
Education
- University of Miami, Bachelor’s degree in Business Administration.
Professional Achievements
- Featured educator for Larson Texts, Big Ideas Learning, and Big Ideas Math.
Philosophy
wikiHow's Editorial Process wikiHow partners with over 1000+ experts from a wide range of fields to ensure our content is accurate and based on well-established research and testimony. Content Managers conduct interviews and work closely with each expert to review information, answer reader questions, and add credible advice. Learn more about our editorial process and why millions of readers trust wikiHow.
Co-authored Articles (124)
Easy-to-Follow Methods for Adding Fractions
Learn to add like fractions, unlike fractions, and mixed numbersAdding fractions is an incredibly handy skill to know not only in school but also for everyday things like calculating cooking measurements. This article wi...
How to
Calculate a Square Root by Hand
In the days before calculators, students and professors alike had to calculate square roots by hand. Several different methods have evolved for tackling this daunting process, some giving a rough approximation, others gi...
How to
Solve a Cubic Equation
In a cubic equation, the highest exponent is 3, the equation has 3 solutions/roots, and the equation itself takes the form ax^3+bx^2+cx+d=0. While cubics look intimidating and unlike quadratic equation is quite difficult...
How to
Write Fractions on a Calculator
Calculating numbers that contain fractions can be tricky, even when you’re using a calculator. You may be able to write a fraction on a calculator using the fraction button. If your calculator doesn’t have this featu...
How to Calculate Percentages on a Calculator
Learn how to quickly perform common percentage calculationsWhether you're working on your math homework or trying to leave a tip at a restaurant, a calculator can help you figure out the percentage of a number quickly an...
How to
Calculate Lotto Odds
Everyone's heard comparisons between the odds of winning the lottery and the odds of other unlikely events, like getting struck by lightning. It's true, the odds of winning the jackpot on a game like Powerball or another...
How to
Find the Center of a Circle
Finding the center of a circle can help you perform basic geometric tasks like finding the circumference or area. There are several ways to find the center point! You can draw crossed lines, you can draw overlapping circ...
How to Complete the Square to Solve a Quadratic Equation
A walkthrough for the entire process of completing the squareCompleting the square is a helpful technique that allows you to rearrange a quadratic equation into a neat form that makes it easier to visualize or even solve...
How to
Find the Height of a Triangle
To calculate the area of a triangle you need to know its height. To find the height follow these instructions. You must at least have a base to find the height.
How to
Measure Grams
The gram is the basic unit of measurement for weight and mass in the metric and SI measurement systems. It is often used to weigh small items, such as dry goods in a kitchen. The only way to accurately measure in grams i...
How to
Find the Domain and Range of a Function
Every function contains two types of variables: independent variables and dependent variables, whose values literally “depend” on the independent variables. For example, in the function ''y'' = ''f''(''x'') = 2''x'' ...
How to Cancel Out a Natural Log (ln)
Solving a natural log is a breeze with this easy, understandable guide Solving an equation for x when a natural logarithm is involved can definitely leave you scratching your head. That little ''ln'' is stopping you from...
How to
Solve for X
There are a number of ways to solve for x, whether you're working with exponents and radicals or if you just have to do some division or multiplication. No matter what process you use, you always have to find a way to is...
How to
Find a Square Root Without a Calculator
Calculating square root is easy if you have a perfect square. If you don’t, there’s a logical process you can follow to systematically figure out the square root of any number, even if you don’t use a calculator. Y...
How to
Calculate Odds
The mathematical concept of '' odds '' is related to, yet distinct from the concept of '' probability. '' In simplest terms, odds are a way of expressing the relationship between the number of favorable outcomes in a giv...
How to
Calculate the Area of a Triangle
The most common way to find the area of a triangle is to take half of the base times the height. Numerous other formulas exist, however, for finding the area of a triangle, depending on what information you know. Using i...
Conversion Factor for Grams to Kilograms (and Kilograms to Grams)
The easiest and fastest ways to convert g to kg and kg to g How many grams in a kilogram? How many kilograms in a gram? If you’re used to using U.S. or Imperial measurements, the metric system can seem like a bit of a...
How to Solve a Quadratic Equation: A Step-by-Step Guide
Learn factoring, the quadratic formula, or completing the squareA quadratic equation is a polynomial equation in a single variable where the highest exponent of the variable is 2. There are three main ways to solve quadr...
How to
Differentiate the Square Root of X
If you have studied calculus, you undoubtedly learned the power rule to find the derivative of basic functions. However, when the function contains a square root or radical sign, such as \sqrt{x}, the power rule seems di...
How to Cross Multiply Fractions
Make cross multiplication fun and easy with these tips and tricksCross-multiplication is a nifty method to use when you have to solve for an unknown variable in an equation where two fractions are set equal to one anothe...
