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What are some male fruit trees that produce fruit? Figs are one example. I don't know any others.? Is looking at the eclipse any worse than looking the sun on a normal day? For a>1 and x,y,xis R show that if x+y>2z then a^x+a^y>2a^z? Translate the following two assertions into logical formula and decide whether they are logically equivalent or not? Why have we not gone back to the moon since the 70s?