Linear algebra bilinear function

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specialnlovin
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True or false. provide either a proof or counter example accordingly
if f is a function V[tex]\times[/tex]V[tex]\rightarrow[/tex]k such that for all v,u,w[tex]\in[/tex]V, [tex]\lambda[/tex][tex]\in[/tex]k, f([tex]\lambda[/tex]v+u,w)=[tex]\lambda[/tex]f(v,w)+f(u,w). Then f is bilinear
I know that this does not include the second part of the requirement to be bilinear, however I cannot come up with a counter example. In order to find a counter example I know I should multiply a linear and non linear transformation but I cannot come up with one that disproves the statement.
 
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what about
[tex]f : \textbf{R}^{2} \times \textbf{R}^{2} \longrightarrow \textbf{R}[/tex]
[tex](u, v) \longmapsto u_{1}[/tex]
 
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