Problem Analysis #40

Motif 3 · Run 1

Incorrect
15.00s
Tokens not reported

Manual web chat · medium response level. The saved transcript may include the prompt and web interface text.

Problem Statement

This is a Korean CSAT mathematics multiple-choice problem. Solve it and put only the correct choice symbol, one of ①, ②, ③, ④, ⑤, inside \boxed{}.

Problem 25 In three-dimensional space, letA  3,− 3 2 ,−2  be a point. LetBbe the reflection ofA across theyz-plane, and letCbe the reflection ofAacross the origin. Find the length of segment BC. [3 points] ① √ 21 ② √ 22 ③ √ 23 ④2 √ 6 ⑤5

Ground Truth
Recorded model response / solution
Reasoning Process

대화가 없습니다

로그인 회원가입 You are solving a Korean CSAT mathematics problem. Reason carefully, but the final response must contain exactly one final answer inside \boxed{}.

For multiple-choice problems, put only one of ①, ②, ③, ④, ⑤ inside \boxed{}. For short-answer problems, put only the final integer inside \boxed{}. Do not use external tools.

Problem 25 In three-dimensional space, letA  3,− 3 2 ,−2  be a point. LetBbe the reflection ofA across theyz-plane, and letCbe the reflection ofAacross the origin. Find the length of segment BC. [3 points] ① √ 21 ② √ 22 ③ √ 23 ④2 √ 6 ⑤5 더보기

점 𝐴 A의 좌표는 ( 3 , − 3 2 , − 2 ) (3,− 2 3 ​

,−2)이다.

𝑦 𝑧 yz-평면에 대한 대칭은 𝑥 x좌표의 부호만 바꾸므로

𝐵

( − 3 , − 3 2 , − 2 ) B=(−3,− 2 3 ​

,−2)

원점에 대한 대칭은 모든 좌표의 부호를 바꾸므로

𝐶

( − 3 , 3 2 , 2 ) C=(−3, 2 3 ​

,2)

두 점 사이의 거리는

𝐵 𝐶

( − 3 − ( − 3 ) ) 2 + ( 3 2 − ( − 3 2 ) ) 2 + ( 2 − ( − 2 ) ) 2

0 2 + 3 2 + 4 2

9 + 16

5 BC= (−3−(−3)) 2 +( 2 3 ​

−(− 2 3 ​

)) 2 +(2−(−2)) 2 ​

= 0 2 +3 2 +4 2 ​

= 9+16 ​

=5

따라서 정답은 ⑤이다.

⑤ ⑤ ​

Motif 3 중간 AI 답변은 오류가 있을 수 있습니다. 중요한 정보는 반드시 다시 확인해 주세요. 서비스를 이용하면 개인정보처리방침 새 창에서 열기 및 이용약관 새 창에서 열기 이 적용됩니다.

Final Model Output
No final answer recorded

Comparative Analysis (P40) (Average across runs)

Averages use reported measurements only. Missing usage is not treated as zero.

Avg Time Taken

Motif 3
13.3
Solar Pro 4
11.4
Kimi K3
9.3
K-EXAONE-2
3.7

Avg Token Usage

K-EXAONE-2
972.7
Solar Pro 4
820.7
Kimi K3
658.0
    CSAT 2026 · Problem 40 · Motif 3 | EntropyMath