How to add +- 10 to particular values randamly

Dear all,

lets say I have the value of 1e6 and 5e6. I want to add + or - 10% of this value all the time. I mean

1e6+10%

5e6-10%

1e6-10%

5e6+10%

May be it can be random. Previously I assumed like

(rand(1,11)) + 1e6;

(rand(1,11))+ 5e6;

But it just give like rand numbers of 0.1 to 0.9 but I want in percentage as mentioned abover.

Can someone reply me quickly

Answer 1

[the cyclist]

Homework? This might be right:

>> x = x .* (1 + 0.2*(rand(size(x))-0.5));

[Fire]

well Cyclist thanks for your answer.. It's not the homework since I am a naive in matlab, these simple things seems to difficult for me... This is wat im expecting.