એટલેકે $\,\vec l \, - 2\,\vec m \, + \,\,3\,\vec n \, = \,\,x\left( {\,\,2\vec l \, + \lambda \,\vec m \, - \,\,4\,\vec n \,} \right) + \,\,y\,\left( {\, - 7\,\vec m \, + \,\,10\,\vec n } \right)$
$\vec l ,\,\vec m \,\,\,$ અને $\,\vec n \,$ સહગુણકોને સરખાવતાં
$1\,\, = \,\,2x\,\,\,\,......\left( 1 \right)$
$ - 2\,\, = \,\,\lambda x\,\, - \,\,7y\,\,\,........\left( 2 \right)$
$3\,\, = \,\, - 4x\,\, + \;\,10y\,\,\,..........\left( 3 \right)$
$\left( 1 \right)\,$ પરથી $x\,\, = \,\,\frac{1}{2},\,\,\left( 3 \right)$ પરથી $y\,\, = \,\,\frac{1}{2}\,$
$\left( 2 \right)\,$ પરથી $\, - \,\,2\,\, = \,\,\lambda \,\,\left( {\frac{1}{2}} \right)\,\, - \,\,7\,\,\left( {\frac{1}{2}} \right)\,\,\,$
$\lambda \,\, = \,\,3$
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