problem 685

  Find the tenth term of the sequence: 1, 9, 17, 25, ….   Solution:-   Find the common difference and use the explicit formula for arithmetic sequences: an =…

Problem 684

  Which of the following represents an example of the Fibonacci sequence in nature?   Solution:-   Examples of the Fibonacci sequence in nature tend to have a spiral pattern.…

Problem 683

  The Fibonacci sequence in nature is best represented by which of the following?   Solution:-   Examples of the Fibonacci sequence in nature tend to have a spiral pattern.…

Problem 682

Write down an (in)equality which describes the solid ball of radius 2 centered at (1, -4, -9). It should have a form like where you use one of the following…

Problem 679

Find an equation of the sphere that passes through the origin and whose center is (7, -3, -6). ……………………….= 0   Solution:-    

Problem 677

Find the equation of the sphere centered at (-2;10;9) with radius 10. ………………………….= 0.   Give an equation which describes the intersection of this sphere with the plane z =…

Problem 676

What do the following equations represent in R3? Match the two sets of letters: a. a vertical plane b. a horizontal plane c. a plane which is neither vertical nor…