Magnitude of the electric field?

Eliasm
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Homework Statement
Charge of uniform density 4.0nC / m is distributed along the x axis from x = - 2.0m to x = + 3.0 * m . What is the magnitude of the electric field at the point x = +5.0 m on the X axis?
Relevant Equations
Electric field
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According to PF rules, you need to show some effort and attempt at a solution before receiving help. Also, "Electric field" is not an equation, it is a vector.
 
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