Question detail
Use a checking method for this problem: final-answer check: multiply the vector (23, 25) by 2. State the final answer and verify it against the information in the question.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Vectors
Question
Use a checking method for this problem: final-answer check: multiply the vector (23, 25) by 2. State the final answer and verify it against the information in the question.
Answer
A valid checked answer is (46, 50). The method is: A vector calculation works component by component. Multiply each vector component by 2. 2 times 23 gives 46. 2 times 25 gives 50. (46, 50) The final line agrees with the canonical answer.
Explanation
calculator check keeps the canonical answer (46, 50) fixed before the model answer is written, so the worked solution and final answer agree.
Common mistake
Vector operations and proofs common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Apply addition and subtraction of vectors and multiplication of vectors by a scalar..
Show the method first, then give the final answer in the required form. Apply this directly to Vector operations and proofs.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.