What is the purpose of ending a line with a semicolon, ;? A. Allows the intermed

Question

What is the purpose of ending a line with a semicolon, ;? A. Allows the intermediate results to be printed B. Represses the intermediate results from being printed C. Signals to the processor that the line has ended D. Indicates the end of the code block E. Indicates the end of a comment If the value stored in memory of a variable is x = 1.23456789, the MatLab command that will print the result formatted to show exactly three decimal places A. disp(x): B. disp('%f ', x): C. fprintf('%3f ', x): D. fprintf('%0.3f ', x): E. fprintf('%f ', x): If A = [6 1 9 4 7 3], then [a b] = min(A): will result in A. a = 1, b = 2 B. a = 1, b = 3 C. a = 3, b = 1 D. a = 2, b = 1 E. Error F. None of the above Write a line of Matlab code that will take two 1x2 vectors, U = [u_x u_y] and V = [v_x v_y], and will calculate the slope, m, of the line that connects them. A. m = slope(U, V): B. (U(2) - V(2)) /(U(1) - V(1)) = m: C. (V(2) - V(1)) /(U(2) - U(1)) = m: D. m = (U(2) - V(2)) /(U(1) - V(1)): E. m = (V(1) -U(1)) /(V(2) - U(2));

Explanation / Answer

29) Semicolon is used in a statement at the end of a line of code to indicate to the compiler tha the code syntax is completed for that particular line. Answer is option C.

30) D) fprintf('%0.3f ', x). %0.xf is the format specifier used to print decimal numbers with x number of decimal places.

31) [a b] = min(A). a represents the smallest number and b represents the row index in which a appeared. Hence answer is option A. a = 1, b = 2

32) The formula for slope of two lines is (y2-y1)/(x2-x1). Here it can be represented as
   m = V(2) - V(1) / U(2) - U(1)
   OPtion is C.

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