Yi Xie – Medium

Yi Xie

Yi Xie

Common Math Mistake 1: Assuming that Function and Inverse Always Cancel

Generally speaking a function and its inverse cancel each other out (when performed one after the other), but there is a very important…

May 1, 2016

Common Math Mistake 1: Assuming that Function and Inverse Always Cancel

May 1, 2016

Yi Xie

High School Math Tip 14: Speeding Up Partial Fraction Calculations

Suppose that you are asked to find

Apr 24, 2016

Apr 24, 2016

Yi Xie

High School Math Tip 13: Using the Discriminant of a Quadratic

The discriminant of a quadratic is very useful when finding the solution directly is not required and/or is too algebraic intensive.

Apr 17, 2016

Apr 17, 2016

Yi Xie

High School Math Tip 12: Tackling Superannuation and Repayment with Time Value of Money

Suppose you are asked to find the total amount at the end of 20 years if $500 was invested at the beginning of every year at 6% p.a..

Apr 10, 2016

Apr 10, 2016

Yi Xie

High School Math Tip 11: Validating Points of Inflection by Looking at the Nature of the Solution

Suppose you are asked to find all points of inflection for

Apr 3, 2016

High School Math Tip 11: Validating Points of Inflection by Looking at the Nature of the Solution

Apr 3, 2016

Yi Xie

High School Math Tip 10: Solving Inequalities with Critical Values

Suppose you are asked to solve:

Mar 27, 2016

High School Math Tip 10: Solving Inequalities with Critical Values

Mar 27, 2016

Yi Xie

High School Math Tip 9: Using Cartesian Coordinates to Tackle Bearing Problems

Suppose you are asked:

Mar 20, 2016

High School Math Tip 9: Using Cartesian Coordinates to Tackle Bearing Problems

Mar 20, 2016

Yi Xie

High School Math Tip 8: Another Shortcut to Integration by Parts

Credit goes to Seth Pal for showing me this technique.

Mar 13, 2016

High School Math Tip 8: Another Shortcut to Integration by Parts

Mar 13, 2016

Yi Xie

High School Math Tip 7: Shortcut to Integration by Parts

Let u and v be functions of x. Then by the product rule

Mar 6, 2016

Mar 6, 2016

Yi Xie

High School Math Tip 6: Using Differentiation to Integrate

Most of the errors from integration can be avoided by differentiating your result and ensuring that the derivative matches the original…

Feb 28, 2016

Feb 28, 2016

Yi Xie

Yi Xie

Wants to show that mathematics is really a subject of wonderful ideas and relationships between seemingly unconnected concepts.

Following

Help
Status
About
Careers
Press
Blog
Privacy
Terms
Text to speech
Teams