"\\frac{1}{a_1}-\\frac{1}{a_2}=-\\frac{1}{F}"
"a_1=\\frac{Fa_2}{F-a_2}=\\frac{16*6.8}{16-6.8}=11.8cm"
"k=\\frac{y_2}{y_1}=\\frac{a_2}{a_1}"
"k=\\frac{6.8}{\n11.8}=0.58"
"y_1=\\frac{3}{0.58}=5,2cm"
Answer "1) a_1=11.8cm" "2) k=0.58" "y_1=5.2cm"
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