1/0.8x^2+0.5x+2

help

Answer 1

[KSSV]

x = linspace(-1,1);
p = 1./(0.8*x.^2+0.5*x+2) ; % element by element operation
plot(x,p)

[Walter Roberson]

but possibly the 1/ only applies to the 0.8

[KSSV]

I suspect it is OP's typo.

Answer 2

[Sam Chak]

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