2nd/3 ways: How many chords can be drawn through 21 points on a circle?

Why is it different from what the book says?

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CBSE 2000 Hindustan: integral (1+tan(x))/(x+log(sec(x)) dx

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

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lim x/e^x? as x→∞

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Pantun Melayu [Sorong papan tarik papan]

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integral ∫ x dx withOUT using Power rule.

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

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Let f(x,y)=4-2xx^2-y^2. Find the slope of the tangent line at the point (1,1,1) on the curve formed

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prob stat: Find the expected value & std deviation in the number of '6's when 20 dice are rolled.

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alternate way: count sum 1 + 2 + 3+... + n via "polynomial"

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alternate way: ∫ √(x^2+a^2 )dx via "expressing in 2 ways"

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Find the equation of the tangent line to the curve x^3-3y^3+xy+21=0 at the point (1,2)

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STPM Math T Sem.2:

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sqrt integral ∫(√x+1)/(x+√x) dx

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5 ways: trig Derivative of sin^2(x)

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Screen Recording 2024-02-02 at 1.54.05 AM

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2nd/2parts Mohammad Ali Jinnah University: Integrate the followings.

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2nd way: lim ((1+h)^3-1)/x? as h →0

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Screen Recording 2024-03-02 at 11.52.18 PM

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alternate way: count sum 1+2+3+ ... +n

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