find k such that the line y=4x-1 is tangent to the graph of f(x)= kx^4

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[FONT=&quot]find k such that the line y=4x-1 is tangent to the graph of f(x)= kx^4[/FONT]

 

[Deleted member 4993]

find k such that the line y=4x-1 is tangent to the graph of f(x)= kx^4

What is the relationship between the derivative of a function and the slope of tangent line?
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