Considere  o menor arco no sentido trigonométrico positivo, para o qual a função real definida por

seja continua em Sendo assim, pode-se dizer que  vale:

Alguns peixes, como o poraquê, a enguia-elétrica da Amazônia, podem produzir uma corrente elétrica quando se encontram em perigo. Um poraquê de 1 metro de comprimento, em perigo, produz uma corrente em torno de 2 ampères e uma voltagem de 600 volts.

O quadro apresenta a potência aproximada de equipamentos elétricos.

O equipamento elétrico que tem potência similar àquela produzida por esse peixe em perigo é o(a)

LOS ANGELES . Come summer 2006, Warner Brothers Pictures hopes to usher “Superman” into thousands of theaters after a 19-year absence. But given the tortured history surrounding that studio’s attempts to revive “Superman,” the forerunner of Hollywood’s nowubiquitous comic-book blockbusters, the Man of Steel’s arrival would be nothing short of a miracle. Since Warner began developing a remake of the successful comic-book franchise in 1993, it has spent nearly $10 million in development, employed no fewer than 10 writers, hired four directors and met with scores of Clark Kent hopefuls without settling on one. The latest director . Bryan Singer, who directed “X-Men” and its sequel, was named on July 18 to replace Joseph McGinty Nichol, known as McG, who left the project after refusing to board a plane to Australia, where the studio was determined to make the film.

THE NEW YORK TIMES, JULY 22, 2004

(FUVEST 2005 1ª FASE) According to the passage, Superman’s arrival