  
    "()"     
        " ()"
       
[ ]     
[ ]     
 
=x   ()
()=(sin(x
()=(cos(x
()=(ln(x
()=(abs(x
 =e=2.7

^4=***  ( ^     )
+  *   \  


 
()=^2+4
()=(+1)\
()=()+(+2)

        
+(+1)*()\(+10)
 
     
      
    

