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Which term describes how Python assigns the type of a variable?

Using polar coordinates, parametrize the region R enclosed by the circle \(x^2+y^2=1\). Then find the volume under the surface \(f(x,y)=1-x^2-y^2\) over the region R.  (Hint: \(\displaystyle \int\int_R f(x,y) \;dxdy = \int\int_R f(r,\theta) \;r\;drd\theta\) )    

Which of the following is not a valid technique to create a function stub?

You arrive at a National Park and are given a contour map. You’re told that if you hike in a straight line on this map from your current location of \((-2, -1)\) to the point \((4,2)\), you will encounter some beautiful views. Before you set out, you learn that the function \(f(x,y) = xy + y^2\) describes the elevation (in hundreds of feet) in your area. Calculate the absolute maximum and minimum elevations along your hiking trail.

Which XXX is valid for the following code?def calc_sum(a, b): return a + bXXXprint(y)

B cells arise in bone marrow and mature in ________

After a power outage, a motor controlled by a manual motor starter will automatically restart.

What type of thermal overload relay can generally be set for manual or automatic operation?

Consider the initial value problem \[\frac{dy}{dx}=(y-x)^2 \;,\;\;y(2)=0.\] Use Euler’s method with step size \(\Delta x = 0.5\) to estimate \(y(3)\).

Find the sum of the infinite geometric series \[27+18+12+8+\ldots\]