Recent questions in Mathematics

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What are the circle theorems

what r the circle theorems
12/03/2017

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By using the mathod of triangle

U+V+W=23U+3V-W=6U-V+W=1
05/03/2017

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Linear Algebra: Vectors

Show that |a+b|^2 + |a-b|^2 = 2|a|^2 +|b|^2
05/03/2017

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Linear Algebra: Vectors

Show that |a+b|^2 + |a-b|^2 = 2|a|^2 +|b|^2
05/03/2017

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What is the most beautiful theorem proof, and why?

For instance- the Pigeon hole principle. Simple and elegant :)
16/12/2016

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Parabola given by the function f(x) = x^2

Let (r, r^2) be an arbitrary point on the parabola f(x) = x^2. Show that the equation of the tangent line to the graph of f(x) at (r, r^2) is given by y = 2rx − r^2.
18/02/2016

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Series and sequences

The first ,second and fifth terms of a linear sequence are three consecutive terms o an exponential sequence .if the first term of the linear sequence is 7 find its a)The common difference of ...
31/10/2015

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Gradient for functions in two variables

Find ∇f(1, 1) for the function in two variables f(x, y) = x^2 + y^2.
20/10/2015