Betrag einer komplexen Zahl

Der Betrag, auch Absolutbetrag genannt, | z | MathType@MTEF@& 053;@& 053;@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbdfgBPj MCPbqeduuDJXwAKbYu51MyVXgaruWqVvNCPvMCG4uz3bqefqvATv2C G4uz3bIuV1wyUbqeeuuDJXwAKbsr4rNCHbGeaGqiVu0Je9sqqrpepC 0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yq aqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeaacaGaaiaabe qaamaaeaqbaaGcbaWaaqWaaeaacaWG6baacaGLhWUaayjcSdaaaa@410E@ einer komplexen Zahl z = a + b i MathType@MTEF@& 053;@& 053;@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbdfgBPj MCPbqeduuDJXwAKbYu51MyVXgaruWqVvNCPvMCG4uz3bqefqvATv2C G4uz3bIuV1wyUbqeeuuDJXwAKbsr4rNCHbGeaGqiVu0Je9sqqrpepC 0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yq aqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeaacaGaaiaabe qaamaaeaqbaaGcbaGaamOEaiaabccacaqG9aGaaeiiaiaadggacqGH RaWkcaWGIbGaamyAaaaa@438F@ ist: | z | = a 2 + b 2 MathType@MTEF@& 053;@& 053;@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbdfgBPj MCPbqeduuDJXwAKbYu51MyVXgaruWqVvNCPvMCG4uz3bqefqvATv2C G4uz3bIuV1wyUbqeeuuDJXwAKbsr4rNCHbGeaGqiVu0Je9sqqrpepC 0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yq aqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeaacaGaaiaabe qaamaaeaqbaaGcbaWaaqWaaeaacaWG6baacaGLhWUaayjcSdGaaeii aiaab2dacaqGGaWaaOaaaeaacaWGHbWaaWbaaSqabeaacaaIYaaaaO Gaey4kaSIaamOyamaaCaaaleqabaGaaGOmaaaaaeqaaaaa@47AF@ Der Betrag einer komplexen Zahl z ist die Länge ihres Ze