1/0.8x^2+0.5x+2

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Fernando Cerna Sanchez
回答： Sam Chak 2022-5-29
help

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回答（2 个）

KSSV
KSSV 2022-5-29
Ran in:
x = linspace(-1,1);
p = 1./(0.8*x.^2+0.5*x+2) ; % element by element operation
plot(x,p)
  2 个评论
Walter Roberson
Walter Roberson 2022-5-29
but possibly the 1/ only applies to the 0.8
KSSV
KSSV 2022-5-29
I suspect it is OP's typo.

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Sam Chak
Sam Chak 2022-5-29
Okay @Fernando Cerna Sanchez
Based on the order of operations using PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) in mathematics and computer programming, I have at least helped you to type this out in MATLAB:
fcn = @(x) 1/0.8*x^2 + 0.5*x + 2
From here, you can do the options to do the following:
  • Plot the graph of this function
  • Solve the function
  • Find Taylor series expansion at point
  • Find the minimum of this function
  • Find the derivative of this function

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