1-Prove the derivative properties of tanh and sigmoidal nonlinearities (slide 3, nonlinear

systems, note the correct version below):

£

net

-1

f(x)=tanh(x)=

net

et.

e* + e

${(x)=___=

it

f(x)=

1

-ax

1+ e

and f= (1-f)

and f=(1-f)