Question

Find the magnitude of u using the dot product. Write the result in radical form or decimal form, rounded to the nearest hundredth.u = (-2,-5)

Answer 1

Answer:

|u| = √29

Explanations:

Since we are only given one vector, we cannot compute its dot product. However, the magnitude of a vector (x, y) is expressed as:

$|u|=\sqrt{x^2+y^2}$

Given the vector u = (-2, -5), the magnitude of u is expressed as:

$\begin{gathered} |u|=\sqrt{(-2)^2+(-5)^2} \\ |u|=\sqrt{4+25} \\ |u|=\sqrt{29} \end{gathered}$

Hence the magnitude of the vector in radical form is √29