In[33]:= f@x_D := 1 H1 + a * Cos@x - yDL ^ 2 In[34]:= f@xD Out[34]= 1 2 H1 + a Cos@x - yDL In[36]:= Integrate@f@xD, xD Out[36]= i Ha-1L tanI x-y M y 2 z zz 2 tanh-1 jjjj z "######## # #### # 2 a sinHx - yL a -1 k { - 2 32 Ha - 1L Ha cosHx - yL + 1L Ha2 - 1L In[37]:= g@x_D := %36 In[40]:= g@xD x-y H-1+aL TanA E 2 2 ArcTanhB F "#############2### a Sin@x - yD -1+a - + 32 2 I-1 + a M H1 + a Cos@x - yDL I-1 + a2 M In[42]:= D@g@xD, xD x-y Out[42]= In[43]:= Out[43]= 2 2 H-1 + aL SecA E a Cos@x - yD a2 Sin@x - yD 2 + - x-y 2 I-1 + a2 M H1 + a Cos@x - yDL I-1 + a2 M H1 + a Cos@x - yDL2 H-1+aL2 TanA E y 2 i 2 j z I-1 + a2 M j 1 z j z j z -1+a2 k { Simplify@%42D 1 2 H1 + a Cos@x - yDL
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