Q in derivatives

Oct 2009
290
0
Q Find all older derivatives

y = X^4/2 = 3/2X^2 -X

y4 = 2X^2 - 3 x ^ 1 - 0
y4 = 4X^1 - 3 -0
y4 = 7
 

mr fantastic

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Q Find all older derivatives

y = X^4/2 = 3/2X^2 -X

y4 = 2X^2 - 3 x ^ 1 - 0
y4 = 4X^1 - 3 -0
y4 = 7
None of this makes any sense. What is the line I have highlighted in red meant to mean? What do all the y4's mean? The 4th derivative of y?

Please re-post the question in such a way that it can be understood.