how to find values with half of maximum from a function

    N=10;
    w=-100:0.01:100;
    H_fourier_abs_1_1=abs(Wc^N./((1i*w).^N+Wc^N));
    figure(311)
    plot(w,H_fourier_abs_50_10)
    title('fourier transform Wc=50,N=10')
    xlabel('w')
    ylabel('X(w)')

this is my code, and i need to find 2 that countain 1/sqrt(2) the value of the maximum of H_fourier_abs_1_1

[Scott MacKenzie]

Your code won't execute:

Unrecognized function or variable 'Wc'.

[Jonathan Jubran]

Wc=10; 

i forgot to add this line

Answer 1

[Thirusabaresaan P]

this one is correct i hope

N=10;

w=-100:0.01:100;

Wc=10

H_fourier_abs_1_1=abs(Wc^N./((1i*w).^N+Wc^N))

figure(311)

plot(w,H_fourier_abs_1_1)

title('fourier transform Wc=50,N=10')

xlabel('w')

ylabel('X(w)')

max(H_fourier_abs_1_1,[],'all')

to find maximum value of array or matrix use command max(A,[],'all')

max(H_fourier_abs_1_1,[],'all')

for your case the answer is infinity so no need to calculate for it

if u want to calculate for others use below command

(1/sqrt(2))*max(H_fourier_abs_1_1,[],'all')

[Jonathan Jubran]

this didnt help becuse it gives me the maximum number, what i need is the w that gives me max/sqrt(2)