Writing a for loop to perform an operation on a vector

I have a vector x = [4,2,6,5,3,8,2], where n (number of elements) = 7. I want to write a function

f = (1+x1)^n1 + (1+x2)^n2 + (1+x3)^n3 + (1+x4)^n4 + (1+x5)^n5 + (1+x6)^n6.

Please note that I do not want the last element (x7) in this expression. How do I write a for loop for this.

I am new to MATLAB and any help would be appreciated. Thanks!

Answer 1

[KSSV]

Vectorized

x = [4,2,6,5,3,8,2] ; 
n = 1:7 ;    %[n1 n2 n3 n4 n5 n6 n7] ;
iwant = sum((1+x(1:6)).^n(1:6)) ;

Loop:

x = [4,2,6,5,3,8,2] ; 
n = 1:7 ;    %[n1 n2 n3 n4 n5 n6 n7] ;
 iwant = 0 ; 
 for i = 1:6
   iwant = iwant+(1+x(i))^n(i) ; 
 end