Opening Statements Offer 2 Pictures of Miss Hearst
jury of 7 women and 5 men sworn in on Feb 4 at Patricia Hearst's bank robbery trial, San Francisco; opening statements made; prosecution describes Miss Hearst as willing participant in robbery while defense atty F Lee Bailey describes her as âprisoner of war for 20 mosâ who could never have had intent to rob bank; other developments noted; sketch of jury (M)