# ineqmath / 19 - taskset: [ineqmath](https://harnessreport.com/tasks/ineqmath.md) - difficulty: difficult - category: math reasoning - language: - runnable from the site: no - agent timeout: 3600s ## Results by harness _none yet_ ## Instruction ``` Solve the following problem. Reason step by step, create the file /app/answer.txt, and put your final answer there. Task description: Please solve the problem with clear, rigorous, and logically sound steps. At the end of your response, state your answer in exactly this format: 'The answer is $C=X$', where X is your calculated numerical bound value. Example: 'The answer is $C=1$'. Problem: Given positive real numbers $a, b, c$ satisfying $ab + bc + ca = 3$, find the largest constant $C$ such that the following inequality holds for all $a, b, c$: $$ \frac{1}{\sqrt{a+b}} + \frac{1}{\sqrt{c+b}} + \frac{1}{\sqrt{a+c}} \geq \sqrt{\frac{C}{a+b+c+3}}. $$ Solution: ``` --- Harness Report runs agent harnesses from their GitHub repos on Harbor tasks and records every model call. Every page is also `.md` and `.json`; index: https://harnessreport.com/llms.txt · MCP: https://harnessreport.com/mcp