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已知x,y满足约束条件 则z=x+2y的最大值是A.-3B.17C.2D.9
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已知x,y满足约束条件
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAAA/CAYAAABQHc7KAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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Vxb3eHLYNhh6DnitLH7Qg1DrJ0FbFq8jbVdKAVkMq/UHdFl87ynosngJSduO7YJIF0S6IPITBJF2
daDXgF4Deg3oNUAg0PpdoF0py5/5uCIo9D7SSRqTgfP9QY9sC4AQPokcJgRRvWESbXHlAU0AEDK3
aAulbc7yEn2GlZ3JmS4dgJgsrlA8yHA6z89NAZcsLiXsWA+gxYyckFUek86AfWGvLL4zwGpYNg1O
va+yo77p0ADEusX5Zy2hlnq7jf0gbx3LoAGIyuJikcAXJSeqAygAkmTxaDDP1TabDECRLC5aZrfP
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pMnYdwAAAABJRU5ErkJggg==
)
则z=x+2y的最大值是( )
A.-3
B.17
C.2
D.9
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NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
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Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
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,则z=3x+2y的最大值为( )
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACzSURBVDhPvZPRDcUgCEWZzJ1Yh2UYxVF4gtoC
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