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Use differential approximations in the following problems.
48. Revenue and profit. A company manufactures and sells x televisions per month. If the cost and revenue equations are
what will the approximate changes in revenue and profit be if production is increased from 1,500 to 1,510? From 4,500 to 4,510?
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Calculus for Business, Economics, Life Sciences, and Social Sciences - Boston U.
- 42.37590 is correct and 42.11205 is incorect.arrow_forwardSet up a free RStudio account at posit.cloud. At the start of your R session, you should enter the following commands. set.seed(1) e<-rnorm(n = 100,mean = 0,sd = 80) x<-seq(1,100,1) y<-10+15*x + e Follow the examples in the Panopto Videos to use R to obtain the values requested below. (As always, if you round your answers, make sure you do so correctly and keep at least three decimal places.) (a) The smallest value of y = (b) The largest value of y = (c) The standard deviation of y = (d) The mean of y = (e) The median of y = (f) The correlation between x and y = : (g) Using the variable e as data, the p-value for a test of Hoμ = 0 vs. HA μ0 isarrow_forward3. (i) Using the definition of the line integral of a vector field, calculate the line integral L³ F.dy of the vector field F: R² → R² given by F(x, y) = (y, x), and where the curve & is the unit semi-circle centred at the origin, located in the upper half-plane and oriented in the anticlockwise direction. Hint. Represent the curve y as the join of two curves y = 71 + 1/2 (see Example 8.9 in the Notes). [20 Marks] (ii) Calculate the same integral using Green's Theorem. [10 Marks]arrow_forward
- 1. Evaluate the integral ↓ f(x, y)dxdy, of function f R² →R over the domain DC R2, where: f(x, y) = 2x + y and D is the is the triangle with vertices (0, -1), (1,0) and (0,2). Hint. Represent D in the form D = {(x, y) = R² : x = (a, b), g(x) < y < h(x)} for some aarrow_forward2. (i) Describe with a sketch the trace of the following curve in R² (t) = (t² sin(t), t2 cos(t)), (€ -2,2]). [15 Marks] (ii) Find the length of this curve. [25 Marks]arrow_forwardDoes Chi-squared(alpha) always represent the right tail of the the chi-square distribution and does Chi-squared(1-alpha) always represent the left tail of the the chi-square distribution. Also, for a standard normal distribution would Z(1-alpha) be equivalent to -Zalpha in represneting the left tail of the standard normal distribution curve because they both have the same z-score. Furthermore, is my understanding correct in the sense that if we have a critical value,say Zalpha, would the area to the right of it will be alpha and to the left of it would be 1-alphaarrow_forwardmay you please check my answer, and please dont use AI! may thanks, samarrow_forward4-5.5 A manufacturer of capacitors claims the breakdown voltage has a mean value of at least 1 00 V. A test of nine capacitors yielded breakdown voltages of 97, 1 04, 95, 98, 1 06, 92, 1 1 0, 1 03, and 93 V. a) Find the sample mean. b) Find the sample variance using an unbiased estimate. c) Is the manufacturer's claim valid if a confidence level of 95% is employed?arrow_forwardCourse Name: Calculus with Analytical Geometry-1 Course Code: MATH 132 Do not use Artificial Intelligent Apps Instruction: 1. Solution must be hand-written 2. Step by step clear explanation Please solve the problem and sketch the graph with paper and pen or pencil 3. Find the domain and ranges of the following b) f(x)=4x²-8x+7arrow_forwardCourse Name: Calculus with Analytical Geometry-1 Course Code: MATH 132 Do not use Artificial Intelligent Apps Instruction: 1. Solution must be hand-written 2. Step by step clear explanation Please solve the problem and sketch the graph with paper and pen or pencil 3. Find the domain and ranges of the following √x-2 a) f(x)= x²-9arrow_forwardCalculus Problem: Please help . thank you. Find f'(x)arrow_forward4-2. 1 A calculator with a random number generator produces the following sequence of random numbers: 0.276, 0.123, 0.072, 0.324, 0.815, 0.312, 0.432, 0.283, 0.717. a) Find the sample mean. b) If the calculator produces three-digit random numbers that are uniformly distributed between 0.000 and 0.999, find the variance of the sample mean. c) How large should the sample size be in order to obtain a sample mean whose standard deviation is no greater than 0.0 1?arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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