MathML has two root objects, an <msqrt> x and an <mroot> x 3 . These are pretty simple. About all you can do with them is see how the rendering stretches them in various ways: horizontally sin x cos y , vertically 1 2 3 4 and det ( 1 2 3 4 ) 2 , as well as 2 x y z w , 2 1 2 3 4 , and 2 det ( 1 2 3 4 ) .

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MathML has two root objects, an <msqrt> x and an <mroot> x 3 These are pretty simple. About all you can do with them is see how the rendering stretches them in various ways: horizontally sin x cos y vertically 1 2 3 4 and det ( 1 2 3 4 ) 2 as well as 2 x y z w 2 1 2 3 4 and 2 det ( 1 2 3 4 )

The formula of Binet shows how the n-th term in the Fibonacci series can be expressed using roots f n = 1 5 [ ( 1 + 5 2 ) n - ( 1 - 5 2 ) n ]