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Haben and sein are used as the auxiliary verbs in the perfect tense before the past participle. Whether you need haben or sein depends on the meaning of the verb you are putting into the perfect tense. Mo...

Both the stack and the queue are data structures, i.e. ways of storing data. It is important to know the differences between how these two data structures operate so that you know when to use one or th...

The subjunctive mood is a very useful (and impressive!) tense to use when writing and speaking and it enables you to express yourself in many more ways, but it is difficult sometimes to get your head arou...

First of all, "second derivative", d²y/dx², is what you get when you differentiate the first derivative (dy/dx).

The second derivative can be used as an ea...

Advantages:

-> Repeatable - the same design can be achieved every time with very good accuracy.

-> Economic - hundreds of copies of the design can be produced b...