1. ? 2. Then the value of = ??
Last edited by Grandad; February 20th 2010 at 05:57 AM. Reason: Fixed LaTeX
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Hello, wizard654zzz! (1) Simplify: . I recognized that: . So we have: .
Hello again, wizard654zzz! I've solved the second one, but I hope someone finds a shorter solution. Find: . We have: . We have: . Substitute into [1]: . Substitute: . Substitute into [4]: . Therefore: .
Mr.Soroban Thank you for your Help
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