### Author Topic: 3.2 Q1?  (Read 1188 times)

#### Ende Jin

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• Posts: 35
• Karma: 11
##### 3.2 Q1?
« on: November 27, 2018, 12:05:43 PM »
There is no example in the book.
The only way I know is to translate it into multivariable calculus and use Lagrange multiplier. However, is there an easier way?

#### Ende Jin

• Sr. Member
• Posts: 35
• Karma: 11
##### Re: 3.2 Q1?
« Reply #1 on: November 27, 2018, 01:50:40 PM »
Never mind, I figured out that I can just specifically analyze.
In Q1, I just draw a graph to see that $|z+2|$ can be at most 3 while the numerator is always 1.