i write this program in matlab M file but it is not working can nay body help me how i can change from real positive integer values to negative values because my answer is -5.02 and work space is not showing that

ht= input('transmitter anteena hight= ');
wa= input('the value of wavelength= ');
hr= input('the value of mobile receiver anteena hight= ');
df= (1/wa((16*ht.^2*hr.^2)-wa.^2*(ht.^2+hr^2)+(wa.^4+16))^1/2)
and the error is

Subscript indices must either be real positive integers or logicals.

kindly help me in this

Answer 1

[Wayne King]

You should show us what kind of inputs you expect. I think the problem you have is that I think you are missing a * operator

df= (1/wa*((16*ht.^2*hr.^2)-wa.^2*(ht.^2+hr^2)+(wa.^4+16))^1/2)

You just have 1/wa((....)) but wa is just a scalar.