Let f(x) be a polynomial of degree 1. If f(10)-f(5)=15, then f(20)-f(5)=?

AI 2008 Hindustan: Evaluate integral ∫ 2/3 cos(x)/sin^2(x) dx

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2nd/2 parts: Mean 1+2+3+...+n is just (1+n)/2. Why?

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logic Idempotent law show x=xVx

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diff eq: Solve dy/dx = (2y4x^4)/(xy^3) ❌separable to ✅separable

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trig Write each expression as an equivalent algebraic expression involving only x.

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Alternate way: Find 1+2+3+... +(n-1)+n via "polynomial degree 2"

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Review: Linear form, Quadratic form & Bilinear form

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Who Should You Flaunt to Make Money?

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The Untold Story Behind Tu Youyou

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When you climb a mountain to honor your ancestors, do you know which mountain you’re actually climbi

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This is seriously too risky—thank goodness God’s off work today!

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Is There a Social Hierarchy in Prison?

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I opened my grandpa’s phone when I got home for the holidays—and the sky fell.

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No money, no unloading!

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How Amazing Is Peat, the Irish Way to Stay Warm?

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Human Speed Bump Tool

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Wen Xi’s Inventions: Anti-Theft Bike

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integral Find ∫1/(9-4x^2) dx

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