Introduction. Home Work 1

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Return amount of full meters for given centimeters.
Return true only if b is between a and c.
Return sum of 2 greatest digits between a, b and c.
$a=\frac{2\sin (x-\frac{\pi}{6})b}{\frac{1}{2}+\sin^{2}y};b=1+\frac{z^{2}}{3+\frac{Z^{2}}{5}}$ .
$s=1+x+\frac{x^{2}}{2!}+\frac{x^{3}}{3!}+\frac{x^{4}}{4!};z=\sin{x^{3}}+\cos^{2}{y}$ .
Return Day title as String in English for Day index (from 1 to 7). Return error string for other indexes. Use case operator to solve this task.
Find sum of $N^{2}+(N+1)^{2}+(N+2)^{2}+...+(2*N)^{2}$ .
Return true only if given number n is power of 3.
Determine whether a record of integer n contains digit 2, if so - return true, else return false.

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