The King's Property of Definite Integrals (reflection property).
In this video, I prove the King’s Property of Integration (the reflection property) int_a^b f(x) dx = int_a^b f(a+b-x) dx. You’ll see a quick substitution proof, then a clean graphical explanation showing why the area stays the same when we reflect across the midpoint (a+b)/2. Perfect for simplifying tricky definite integrals. #Calculus #Integration #DefiniteIntegrals #MathProof #PrimeNewtons
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