a.
To find: The number of 4th great grandparents and their generation.
The number of 4th great grandparents is 64. They are generation 6.
Given information:
Current(1) generation: 0.
Parents’(2) generation: 1.
Grandparents(4) are generation 2.
Great grandparents are generation 3.
2nd great grandparents are generation 4.
Calculation:
Number of individuals in each generation following exponential model
Great grandparents:
2nd great grandparents:
3rd great grandparents:
4th great grandparents:
b.
To find: The exponential function for nth great grandparents.
Exponential function for nth great grandparents:
Given information:
Current(1) generation: 0.
Parents’(2) generation: 1.
Grandparents(4) are generation 2.
Great grandparents are generation 3.
2nd great grandparents are generation 4.
Concept used:
Exponential function:
Explanation:
Number of individuals in each generation following exponential model
There are 8 first great grandparents and
Exponential function for nth great grandparents:
c.
To find: The number of 6th great grandparents.
The number of 6th great grandparents is 256.
Given information:
Current(1) generation: 0.
Parents’(2) generation: 1.
Grandparents(4) are generation 2.
Great grandparents are generation 3.
2nd great grandparents are generation 4.
Explanation:
Exponential function for nth great grandparents:
Put
The number of 6th great grandparents:
The number of 6th great grandparents is 256.
d.
To find: The number of 25th great grandparents.
The number of 25th great grandparents is 134217728.
Given information:
Current(1) generation: 0.
Parents’(2) generation: 1.
Grandparents(4) are generation 2.
Great grandparents are generation 3.
2nd great grandparents are generation 4.
Explanation:
Exponential function for nth great grandparents:
Put
Number of 25th great grandparents will be
e.
To find: The percentage of people in 1250 related to the person in generation 1.
About 8.4% of the population in 1250 is related to the person in generation 0.
Given information:
Current(1) generation: 0.
Parents’(2) generation: 1.
Grandparents(4) are generation 2.
Great grandparents are generation 3.
2nd great grandparents are generation 4.
World’s population in 1250 is 400 million.
Explanation:
Exponential function for nth great grandparents:
For 25 generation,
The number 23rd great grandparents:
Also,
About 8.4% of the population in 1250 is related to the person in generation 0.
Chapter 3 Solutions
EBK PRECALCULUS:GRAPHICAL,...-NASTA ED.
- nd ave a ction and ave an 48. The domain of f y=f'(x) x 1 2 (= x<0 x<0 = f(x) possible. Group Activity In Exercises 49 and 50, do the following. (a) Find the absolute extrema of f and where they occur. (b) Find any points of inflection. (c) Sketch a possible graph of f. 49. f is continuous on [0,3] and satisfies the following. X 0 1 2 3 f 0 2 0 -2 f' 3 0 does not exist -3 f" 0 -1 does not exist 0 ve tes where X 0 < x <1 1< x <2 2arrow_forwardNumerically estimate the value of limx→2+x3−83x−9, rounded correctly to one decimal place. In the provided table below, you must enter your answers rounded exactly to the correct number of decimals, based on the Numerical Conventions for MATH1044 (see lecture notes 1.3 Actions page 3). If there are more rows provided in the table than you need, enter NA for those output values in the table that should not be used. x→2+ x3−83x−9 2.1 2.01 2.001 2.0001 2.00001 2.000001arrow_forwardFind the general solution of the given differential equation. (1+x)dy/dx - xy = x +x2arrow_forwardEstimate the instantaneous rate of change of the function f(x) = 2x² - 3x − 4 at x = -2 using the average rate of change over successively smaller intervals.arrow_forwardGiven the graph of f(x) below. Determine the average rate of change of f(x) from x = 1 to x = 6. Give your answer as a simplified fraction if necessary. For example, if you found that msec = 1, you would enter 1. 3' −2] 3 -5 -6 2 3 4 5 6 7 Ꮖarrow_forwardGiven the graph of f(x) below. Determine the average rate of change of f(x) from x = -2 to x = 2. Give your answer as a simplified fraction if necessary. For example, if you found that msec = , you would enter 3 2 2 3 X 23arrow_forwardA function is defined on the interval (-π/2,π/2) by this multipart rule: if -π/2 < x < 0 f(x) = a if x=0 31-tan x +31-cot x if 0 < x < π/2 Here, a and b are constants. Find a and b so that the function f(x) is continuous at x=0. a= b= 3arrow_forwardUse the definition of continuity and the properties of limits to show that the function is continuous at the given number a. f(x) = (x + 4x4) 5, a = -1 lim f(x) X--1 = lim x+4x X--1 lim X-1 4 x+4x 5 ))" 5 )) by the power law by the sum law lim (x) + lim X--1 4 4x X-1 -(0,00+( Find f(-1). f(-1)=243 lim (x) + -1 +4 35 4 ([ ) lim (x4) 5 x-1 Thus, by the definition of continuity, f is continuous at a = -1. by the multiple constant law by the direct substitution propertyarrow_forward1. Compute Lo F⚫dr, where and C is defined by F(x, y) = (x² + y)i + (y − x)j r(t) = (12t)i + (1 − 4t + 4t²)j from the point (1, 1) to the origin.arrow_forward2. Consider the vector force: F(x, y, z) = 2xye²i + (x²e² + y)j + (x²ye² — z)k. (A) [80%] Show that F satisfies the conditions for a conservative vector field, and find a potential function (x, y, z) for F. Remark: To find o, you must use the method explained in the lecture. (B) [20%] Use the Fundamental Theorem for Line Integrals to compute the work done by F on an object moves along any path from (0,1,2) to (2, 1, -8).arrow_forwardhelp pleasearrow_forwardIn each of Problems 1 through 4, draw a direction field for the given differential equation. Based on the direction field, determine the behavior of y as t → ∞. If this behavior depends on the initial value of y at t = 0, describe the dependency.1. y′ = 3 − 2yarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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