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How does Bernini’s David compare to Renaissance depictions of the same subject? Gianlorenzo Bernini, David, 1624

What did the artist Kandinsky articulate in his treatise Concerning the Spiritual in Art? Vassily Kandinsky, Improvisation 28 (second version), 1912

Choose all sets that are subspaces of . Note: you must choose all correctly to receive credit. 

Even if 

Identify if the matrix is only echelon form, reduced echelon form, or neither:      

Identify if the matrix is only echelon form, reduced echelon form, or neither:       

Compute the characteristic polynomial of the matrix (this is the polynomial you set = 0 to find the eigenvalues). 

Identify if a matrix is only echelon form, reduced echelon form, or neither:

Let’s go back to Pennsylvania.a. In Pennsylvania, there are many ridges separated by valleys. The ridge tops seem to zig-zag back and forth. Sort of back-and-forth and then back-and-forth again. Explain how this came to be? Why is it this way?b. And if you go to Pennsylvania, will you find that the rocks on top of the ridges are older than those in the valleys, or it will be the other way around? Or, will there be places that are one way, and other places that are the other way? Explain.

a. What is the fuel used in nuclear power plants? (What does it consist of?)b. What are breeder reactors and why might they be important in the future? On the other hand, there are some real worries about breeder reactors. What are the potential problems?