MathMelon
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This channel was created to help both high school students and undergraduates that take math courses or study mathematics as a course, understand math theorems together with it's proof easily and thoroughly and also join in the fun and amazement in the wonders of MATH!!!
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How to prove the nth sum of geometric sequence (Sn=a(1-r^n)/1-r)
How to prove the sum of an arithmetic sequence (Sn=n/2(2a+(n-1)d)
How to derive the quadratic formula from ax2+bx+c=0, using completing the square method
How to prove that m1×m2=-1 (gradient of perpendicular lines)
External Section Formula: How to derive/prove the external division(section) formula
Internal section Formula: How to derive/prove the internal division (section) formula
How to derive the distance formula, using the Pythagorean theorem