Find a solution for the following recurrence relation and initial conditions (use the method of characteristic equation): di = 6d-1-9d1-2, for all integers k> 2; do -1, di = 4. dk=d3k+bk3k do=1=d30+b*0*39=d> d=1 d1=4=d31=3d+3b → d+b=4/3 +b=4/3=d=4/3-154-3/3=1/3 final: dx=3kk3*

4 puzzles in 3 hours

step-by-step explanation:

correct answer:

b.(19,-2)

the radius is 2 times the diameter.

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places