Definitely helpful if you draw a picture first.
The 1st and the 3rd test are incorrect
Find all elements less than 0 or greater than 10 and replace them with NaN
Remove the polynomials that have positive real elements of their roots.
Create an index-powered vector
multiply by three
Is this triangle right-angled?
Area of an equilateral triangle
Side of a rhombus
Dimensions of a rectangle
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