An airplane that travels 450 mph in still air encounters a 50-mph headwind. How long will it take the plane to travel 1200 mi in
1 answer:
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First we will evaluate: ( substitution: u = x² - y², du = - 2 y dy )
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( than plug in x and 0 )
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= 1/3 x³ ( then another integration )
= 1/3 * 1/4 = 1/12
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= 1/3 x³ ( then another integration )
= 1/3 * 1/4 = 1/12