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logic Idempotent law show x=xVx
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sum Find 1/1.4 + 1/4.7 +1/7.10+... +1/((3n-2)(3n+1))
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A box contains 8 blue & 6 red socks. What is the number of ways that 2 socks can be drawn ...
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2nd way: derivative (x^x)^x
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Suppose z is differentiable funtion of x & y that is defined implicitly x^2+y^3-z+2yz^2=5
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Find the 2nd-order partial derivatives of f(x,y)=2xy^2-3x^2+xy^3
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2 ways: Find logarithm of 5 to the base 5 √5.
2010 Raytheon MATHCOUNTS National Competition
Bijection of elements in tn & a pair of elements of (n+1)
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Screen Recording 2024-02-22 at 10.23.21 PM
2 ways: trig integral ∫sec^2(ax+b) tan(ax+b) dx
prob stat: The following frequency table gives the values obtained