The problem
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too many steps! simply please!
Answer provided by our tutors
General functional notation (e.g. f(x) ) is not supported. If you wish to draw a function such as f(x) = - 2(x-1)^2 - 5, replace f(x) with y (or any other unused variable). So, in this case we have:
y = - 2(x-1)^2 - 5
