span><span class='fu'><a href='https://rdrr.io/r/stats/coef.html'>coef</a></span><span class='op'>(</span><span class='va'>out</span><span class='op'>)</span><span class='op'>[</span><span class='fl'>1</span><span class='op'>]</span> <span class='op'>*</span> <span class='va'>x</span><span class='op'>^</span><span class='op'>(</span><span class='op'>-</span><span class='fu'><a href='https://rdrr.io/r/stats/coef.html'>coef</a></span><span class='op'>(</span><span class='va'>out</span><span class='op'>)</span