Exercise Solution 9.3
The grdient approximation is provided by [9.23]:
[9.23]
We value
[s1]
[s2]
[s3]
The gradient of a function is defined by [2.6]. Applying that definition to [9.43] at the point 1|0μ yields
[s4]
[s5]
[s6]
We also calculate
[s7]
Substituting [s3], [s6] and [s7] into [9.23], we obtain
[s8]
[s9]