How do you find the maximum value of a function in Matlab?

How do you find the maximum value of a function in Matlab?

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1. syms x.
2. f = sin(x)+sin(x*2);
3. f2 = diff(f,x)==0;
4. extreme_points = solve(f2,x);
5. extreme_values = subs(f, x, extreme_points);
6. [maxX, maxidx] = max(extreme_values);
7. best_location = extreme_points(maxidx);
8. best_value = simplify(maxX, ‘steps’, 50);

How do you find the minimum value of a function in Matlab?

M = min( A ) returns the minimum elements of an array.

1. If A is a vector, then min(A) returns the minimum of A .
2. If A is a matrix, then min(A) is a row vector containing the minimum value of each column.

How do you find the max and min of an equation in Matlab?

matlab find max and min of given equation

1. to write matlab code for this equation.
2. f(a,y)= a^2y^2+3ya+4(a^2y-4y^4a)
3. df(a,y)/da=0.
4. then substitute the value back to equation to find min value of F(y)

How do you find the maximum and minimum of a function?

Finding max/min: There are two ways to find the absolute maximum/minimum value for f(x) = ax2 + bx + c: Put the quadratic in standard form f(x) = a(x − h)2 + k, and the absolute maximum/minimum value is k and it occurs at x = h. If a > 0, then the parabola opens up, and it is a minimum functional value of f.

How do you find the maximum or minimum of a function?

Use basic rules of algebra to rearrange the function and solve the value for x, when the derivative equals zero. This solution will tell you the x-coordinate of the vertex of the function, which is where the maximum or minimum will occur.

How to find the minimum value in an array?

M = min (A) returns the minimum elements of an array. If A is a vector, then min (A) returns the minimum of A. If A is a matrix, then min (A) is a row vector containing the minimum value of each column.

How to use ‘find’ function in MATLAB?

– To find array elements that meet a condition, use find in conjunction with a relational expression. – To directly find the elements in X that satisfy the condition X<5, use X (X<5) . – When you execute find with a relational operation like X>1, it is important to remember that the result of the relational operation is a logical matrix of ones and zeros. – The row and column subscripts, row and col , are related to the linear indices in k by k = sub2ind (size (X),row,col).

What is Max in MATLAB?

C=max(A) If A is a matrix, max(A) is equivalent to max(A,[],1) in Matlab whereas in Scilab max(A) gives the maximum value found in A. Matlab max treats the values along the first non-singleton dimension.

What is exp function in MATLAB?

Defining Functions When you use “sin” or “log” or “exp” in Matlab you are using “function m-files”. They are different from “script m-files” primarily because they have inputs and outputs. function output=function_name(input) For example, an m-file that begins with the line: function L=vec_length(V)