angled mirrors

defs

mirrors

reflection lines

object

reflections

compute number of images

運算式 28: "B" left parenthesis, "x" , right parenthesis equals phi plus beta plus Start sum from "n" equals 2 to "x" , end sum, left brace, StartFraction, left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis Over floor left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis , EndFraction equals 1 : 2 alpha , StartFraction, left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis Over floor left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis , EndFraction greater than 1 : 2 beta , right brace

運算式 29: "A" left parenthesis, "x" , right parenthesis equals alpha plus Start sum from "n" equals 2 to "x" , end sum, left brace, StartFraction, left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis Over floor left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis , EndFraction equals 1 : 2 beta , StartFraction, left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis Over floor left parenthesis, StartNestedFraction, "n" NestedOver 2 , EndNestedFraction , right parenthesis , EndFraction greater than 1 : 2 alpha , right brace

運算式 30: "p" equals Start sum from "i" equals 1 to "k" left parenthesis, alpha , right parenthesis , end sum, Start sum from "j" equals 1 to "k" left parenthesis, beta , right parenthesis , end sum, left brace, "A" left parenthesis, "i" , right parenthesis plus "B" left parenthesis, "j" , right parenthesis equals 360 : 1 , 0 , right brace

運算式 31: "I" Subscript, "m" "g" "N" "u" "m" "b" "e" "r" , Baseline equals left brace, alpha equals 0 : 0 , alpha equals phi : 0 , "k" left parenthesis, alpha , right parenthesis positive "k" left parenthesis, beta , right parenthesis negative "p" , right brace

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