how to vary step size using steepest ascent algorithm

I have a doubt regarding steepest ascent method. I need to find the maximum value of s, where s=x+1/y. x and y are the parameters that are calculated at different values of dd and dd varies from 1 to 10 with step size of .015(very small). If I directly apply the loop in Matlab to calculate of x and y and further s for all values of dd (1:.015:10), the process is lengthy and time consuming. I am trying to apply steepest ascent method with which the step size can be varied according to the response . can u please suggest whether this will solve my problem... secondly, how the step size can be varied... please help