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

MPPET 1996 Hindustan: trig integral ∫ sin^2(x) -cos^2(x)/(sin^2(x) cos^2(x)) dx

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_Isekai_Office_Worker: _The_ Other_World's_Books_Depend_ on_the_Bean_Counter_ | Ep.2

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RPET 2003 Hindustan: integral ∫sin^4(x)-cos^4(x) dx

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2nd/3ways: trig integral ∫sec(x) dx

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integral ∫ x dx withOUT using Power rule.

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2 ways: sq root derivative 1/(√√(1/√x))

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exp Differentiate (i) b^e^x (ii) b^x&e (iii) (b^e)^x (iv) (b^x)^e

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

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1st/2ways: Find the sum 1/7, 10/21, 17/21, 24/21, 31/21 via median.

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The Half-Fox’s Stand #Stand #NationalSecurity #HalfFox #SeverelyInjuredFox

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integral ∫√(x-a)/x dx

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A function f is called even if f(-x)=f(x) for ALL x in the domain of f &

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2 ways: sq root √x^x

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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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3rd/3ways: derivative (x+1)^(1/2) (x+2)^(1/3) (x+3)^(1/4) (x+4)^(1/5) (x+5)^(1/6)

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4th/4ways: trig derivative sin(x)

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Find the Maclurin series for (2x+3)(5x-4)

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Careful: arc sin(sin(5π/4)) ≠ ...

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Alternate way: trig integral ∫sin(x) dx

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Quickie: 6169^2 - 2331^2?

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