Question 316489
{{{y=Ae^(kx)}}}
{{{y(0)=Ae^(0)=A=3}}}
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{{{y=3e^(kx)}}}
{{{y(-1)=3e^(-k)=6}}}
{{{e^(-k)=2}}}
{{{-k=ln(2)}}}
{{{k=-0.6931}}}
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{{{highlight(y=3e^(-0.6931x))}}}
{{{ drawing( 300, 300, -5, 5, -5, 10,grid(1),circle(0,3,.2),circle(-1,6,.2), graph( 300, 300, -5, 5, -5, 10, 3*2.718^(-0.6931x))) }}}