Question
upstudy study bank question image url

Define the points \( P(-4,-2) \) and \( Q(3,-4) \). Carry out the following calculation. Find two vectors parallel to \( \overrightarrow{Q P} \) with length 2 . The parallel vector of length 2 with the same direction is \( \left\langle\frac{-14 \sqrt{53}}{53}, \frac{4 \sqrt{53}}{53}\right) \). (Type exact answers, using radicals as needed.) The parallel vector of length 2 with the opposite direction is \( \langle\square, \square \). (Type exact answers, using radicals as needed.)

Ask by Reyes Schneider. in the United States
Jan 22,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The parallel vector of length 2 in the opposite direction is \( \left\langle \frac{14\sqrt{53}}{53}, \frac{-4\sqrt{53}}{53} \right\rangle \).

Solution

Sign in to Unlock Answers for Free!

A Learning Platform Trusted by Millions of Real Students and Teachers.

star-icon Unlock

Reviewed and approved by the UpStudy tutoring team

Extra Insights

To find the vector \(\overrightarrow{QP}\), we start by calculating the coordinates of this vector: \[ \overrightarrow{QP} = P - Q = (-4, -2) - (3, -4) = (-4 - 3, -2 + 4) = (-7, 2). \] Next, we find the magnitude of \(\overrightarrow{QP}\): \[ \|\overrightarrow{QP}\| = \sqrt{(-7)^2 + 2^2} = \sqrt{49 + 4} = \sqrt{53}. \] To find a unit vector in the direction of \(\overrightarrow{QP}\), we divide each component of \(\overrightarrow{QP}\) by its magnitude: \[ \frac{\overrightarrow{QP}}{\|\overrightarrow{QP}\|} = \left\langle \frac{-7}{\sqrt{53}}, \frac{2}{\sqrt{53}} \right\rangle. \] Next, we multiply this unit vector by 2 to get the vector in the same direction with a length of 2: \[ \mathbf{v}_{\text{same}} = 2 \cdot \left\langle \frac{-7}{\sqrt{53}}, \frac{2}{\sqrt{53}} \right\rangle = \left\langle \frac{-14}{\sqrt{53}}, \frac{4}{\sqrt{53}} \right\rangle. \] The parallel vector of length 2 with the same direction is given as \[ \left\langle \frac{-14 \sqrt{53}}{53}, \frac{4 \sqrt{53}}{53} \right\rangle. \] Now, for the parallel vector of length 2 with the opposite direction, we simply reverse the signs: \[ \mathbf{v}_{\text{opposite}} = 2 \cdot \left\langle \frac{7}{\sqrt{53}}, \frac{-2}{\sqrt{53}} \right\rangle = \left\langle \frac{14}{\sqrt{53}}, \frac{-4}{\sqrt{53}} \right\rangle. \] Putting it in the requested format, we obtain: \[ \langle \frac{14 \sqrt{53}}{53}, \frac{-4 \sqrt{53}}{53} \rangle. \] Thus, the parallel vector of length 2 with the opposite direction is \[ \langle \frac{14 \sqrt{53}}{53}, \frac{-4 \sqrt{53}}{53} \rangle. \]

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy