Question 1

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Question text

Dada la función c left parenthesis z right parenthesis equals open curly brackets table row cell 4 times cos open parentheses negative z over 4 plus 1 close parentheses minus 8 space space colon end cell cell z less than negative 8 end cell row cell negative 8 times z minus 2 space space colon end cell cell negative 8 less or equal than z less than 3 end cell row cell 3 times z squared minus 9 times z plus 2 space space colon end cell cell z greater or equal than 3 end cell end table close

Determina:

1) La imagen de 0

2) La preimagen de 212

Obs.:

Si la función que debes utilizar es trigonométrica, escribe tus resultados en radianes.

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