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a. Consider the following utility function U(x,_y) : x + In}F Is the utility function homotheticiJ Explain. b. Suppose, after taking this course, and as part of a term paper, you estimate the welfare changes associated with a price change using variation in consumer surplus (C5) to approximate welfare changes. \"We know (from this course) that the compensated variation (CV) and equivalent variation (EV) from the Hicksian or expenditure functions can also be used to measure welfare changes associated with price changes. Suppose, in addition to CS, you also estimated the CV related to the price change in sensitivity analysis and found that the CS and the CV were the same. What does this tell you about the magnitude of the income effect of the price change