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When you plot  Rs vs ns, what is the coefficient of the highest order of the best fit? Round to the nearest whole number.

 What component of the ultrasound machine is used to detect positive versus negative frequency shifts?

The diagram below shows the major white matter tracts in the spinal cord labelled A-J.  Use the diagram to choose the BEST match.  An answer may be used more than once or not at all.

43. Which of the following is false about color Doppler imaging?

What does increasing the PRF/scale setting on a spectral Doppler do?

A stenosis of 75% in area is equal to what percent of stenosis in diameter?

Find the derivative of \( f(x) = e^{\sin(x)} \)

Using the substitution rule for definite integrals, which is equal to \[ \int_1^2 \frac{(\ln x)^2}{x} dx \]

Find the limit \[ \lim\limits_{x \to -3} \frac{x^2 – 2x – 15}{x + 3} \]

What is the limit definition of this definite integral? \[ \int_{-\pi/2}^{3\pi/2} \cos(x)\, dx \]