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quiz00_1

# quiz00_1 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department...

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MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Civil and Environmental Engineering 1.017 Computing and Data Analysis for Environmental Applications Quiz 1 (Solutions) Thursday, October 5, 2000 Please answer Problems 1-5 and either Problem 6 or Problem 7 (maximum score = 100 points): Problem 1 (15 points) Suppose a = [ 4 3 1] b = [ -3 2 7] Evaluate the following expressions … test=a.*b>6 ftest=find(a.*b>6) Problem 2 (15 points) Write a MATLAB script which generates the sequence given by: N ( i ) = 1 i = 1,2 N ( i ) = N ( i - 1) + N ( i - 2) i > 2 The first few number of this sequence are: 1, 1, 2, 3, 5, 8, 13, … Problem 3 (15 points) Soil saturation ( S ) is the fraction of a soil's pore space filled by water. Suppose that this saturation is related to the capillary pressure ( P ) of soil water as follows: S = 1 for P < 10 S = 1 + 0.01(10 - P) for 10 P < 100 S = 0.1 for P >100 a) Write a MATLAB function called sp which takes a vector of P values and returns a vector of corresponding S values. b) Write a MATLAB function called plotsp that plots an S vs P curve over the range P = 0 to 150. The function plotsp should call the function sp to obtain values for the plotting.

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quiz00_1 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department...

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