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In[86]:= Reduce[NextPrime[x] - x == 2 && 0
I learned C and Java before learning Mathematica. So I don't like using f[] to call a function. Is it posiblle use other symbols to instead of f[]? Prime@4 (*worked!, return 7*) Plot@( x, {x, 0, 6 Pi} ) (*Syntax::sntxf: "("...
If[PrimeQ[#], Style[#, Red], #] & /@ (Range[25]^2 + 1) NOT be: If[PrimeQ[#], Style[#, Red], #] & /@ Range[25]^2 + 1