# Find all real solutions of the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) x4 + 27x = 0

148,855 results
1. ## Calculus 1

Find the number c that satisfies the conclusion of the Mean Value Theorem on the given interval. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = sqrt(x), [0,16]

2. ## Trig

Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a comma-separated list. Round your answers to one decimal place.) Sin θ = 1/4

3. ## Pre-Calc

sin(2θ)=1/2 Find all solutions in the interval [0, 2π). (Enter your answers as a comma-separated list.) k = any integer What I have so far: pi/12 + kpi, 5pi/12 + kpi However, I do not know how to solve for the interval. Please help, thank you!

4. ## calculus 1

Use Newton's method to find all solutions of the equation correct to six decimal places. (Enter your answers as a comma-separated list.) 6 cos(x) = x + 1 can somebody explain to me step by step on how to solve this problem?

5. ## Math

An equation is given. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.) Find the solutions in the interval: √3tan(3θ)-1 Interval

6. ## Trigonometry

Solve the equation. (Find all solutions of the equation in the interval [0, 2π). Enter your answers as a comma-separated list.) 4 tan(2x) − 4 cot(x) = 0

7. ## Calculus 1

Consider the following. B(x) = 3x^(2/3) − x (a) Find the interval of increase.(Enter your answer using interval notation.) Find the interval of decrease. (Enter your answer using interval notation.) (b) Find the local maximum value(s).(Enter your answers

8. ## calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = 4x3 + x2 + 4x

9. ## precalculus

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. tan θ = − sqrt 3/3

10. ## Calculus

We can find some of the solutions of sin x = 0.2 graphically by graphing y = sin x and y = 0.2 (I was able to figure this one out) Use the graph below to estimate some of the solutions. (Let −3π < x < 3π.) Enter your answers as a comma-separated list.

11. ## maths

Use a graphing utility to approximate the solutions of the equation in the interval [0, 2Ï€). (Round your answers to three decimal places. Enter your answers as a comma-separated list.) 6 sin(x) + 3 cos(x) = 0

12. ## Pre-Cal

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) cos θ = −1/2 1).θ= Answer-->(2π/3)+2πn, 4π/3+2πn 2). List six specific solutions a). b). c). d).

13. ## Calculus

Find the number c that satisfies the conclusion of the Mean Value Theorem on the given interval. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = √x , [0, 25]

14. ## Trigonometry

Find all solutions of the equation in the interval [0, 2π). (Enter your answers as a comma-separated list.) cos(x+3pi/4) - cos(x-3pi/4) = 1

15. ## Trigonometry

Find all degree solutions. (Enter your answers as a comma-separated list. Let k be any integer.) 2 cos2 6θ + 3 cos 6θ + 1 = 0

16. ## calculus

Let f(x) = (x − 3)−2. Find all values of c in (2, 5) such that f(5) − f(2) = f'(c)(5 − 2). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) C=?

17. ## Trigonometry

Solve the equation for exact solutions in the interval 0 ≤ x < 2π. (Enter your answers as a comma-separated list.) cos 2x cos x − sin 2x sin x = 0

18. ## Pre-Cal

An equation is given. (Enter your answers as a comma-separated list. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.) 2 cos 2θ − 1 = 0 a). Find all solutions of the equations answer--> θ= (π+6nπ)/6 ,

19. ## pre cal

Find the zeros of the function algebraically. (Enter your answers as a comma-separated list.) f(x) = 3x + 18

20. ## Precal

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) cos θ = 0.16 I know how to find the answers when it's in fraction form, however, I do not know how to do

21. ## Math

We can find the solutions of sin x = 0.6 algebraically. (Round your answers to two decimal places.) (a) First we find the solutions in the interval [0, 2π). We get one such solution by taking sin−1 to get x = ________ (smaller value). The other solution

22. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = x^(5)e^(-6x)

23. ## Trig

Solve the multiple-angle equation. (Enter your answers as a comma-separated list. Let n be any integer. Enter your response in radians.) sec 9x = 2

24. ## Calculus 1

Use Newton's method to find all roots of the equation correct to six decimal places. (Enter your answers as a comma-separated list.) (x − 9)^2 =ln x

25. ## precalc

Solve the equation. (Enter your answers as a comma-separated list. Round your answers to four decimal places.) 2^x − 8(2^−x) + 2 = 0

26. ## trig

Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a comma-separated list. Round your answers to one decimal place.) cos θ = 1/7

27. ## Pre-calc

Use a graphing utility to graph y1 and y2 in the interval [−2𝜋, 2𝜋]. Use the graphs to find real numbers x such that y1 = y2. (Enter your answers as a comma-separated list.) y1 = cos x y2 = 1 Is the answer 𝜋 ,-𝜋 ? or is it zero? Because I

28. ## MATH

Find all real solutions of the equation by first rewriting the equation as a quadratic equation. (Enter your answers as a comma-separated list.) 4x4 + 15x2 − 4 = 0

29. ## Pre-Calculus

f(x) = cos(x) on the interval [−2π, 2π] (a) Find the x-intercepts of the graph of y = f(x). (Enter your answers as a comma-separated list.) (b) Find the y-intercepts of the graph of y = f(x). (Enter your answers as a comma-separated list.) (c) Find the

30. ## Pre calc

An equation is given. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. Find All solutions of the equation 2sin(theta/3)+ square root three =0

31. ## precalculus

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) sin θ = root 2/2 and List six specific solutions.

32. ## Calculus 1

Use Newton's method to find all roots of the equation correct to six decimal places. (Enter your answers as a comma-separated list.) 7/x = 1 + x^3

33. ## Algebra

Find the real zeros of f. (Enter your answers as a comma-separated list.) f(x) = −x2 + 7x + 8x X =_____ Find the x-intercepts of the graph of f. (x, y) =_______(smaller x-value) (x, y) =_______(larger x-value)

34. ## Trigonometry

Find all solutions of the equation in the interval [0, 2π). (Enter your answers as a comma-separated list.) sin(x + π) − sin x + sqrt(3)=0

35. ## math

Find the solutions of the equation 3^x = x^4, rounded to two decimal places. (Enter your answers as a comma-separated list.)

36. ## Trigonometry

Solve the equation, where 0° ≤ x < 360°. Round approximate solutions to the nearest tenth of a degree. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 3 sin x − 3 cos x = 1

37. ## Algebra

Use the Quadratic Formula to solve the equation. (Enter your answers as a comma-separated list.) 13x^2 + 1= -10x

38. ## precal

Find all solutions of the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) 2 cos θ − 1 = 0

40. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) F(x) = x^4/5(x − 1)^2

41. ## mathematics

Find the solutions of equation 2^ x equiv x^ 5 rounded to one decitrial place. Enter your answers as a comma-separated .

42. ## math

Find two quadratic equations having the given solutions. (There are many correct answers. Use x for the variable. Enter your answers as a comma-separated list of equations.) 4+5√(5), 4-5√(5)

43. ## Calculus

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) h(p) = (p − 2)/(p^2 + 9)

44. ## Trigonometry

Find all solutions of 4(sin(x)**2)-8cos (x) -8 = 0 in the interval (2pi, 4pi). (Leave your answers in exact form and enter them as a comma-separated list.)

45. ## precal

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.) 2 cos2 θ − cos θ − 1 = 0

46. ## Math

Find the value(s) of x for which the equation is true. log(x + 20) = log(x) + log(20) Solve the logarithmic equation for x. (Enter your answers as a comma-separated list. Round your answer to four decimal places.) ln(x − 2) + ln(x + 3) = 1

47. ## mathematics

Use Newton's method to find all solutions of the equation correct to six decimal places. (Enter your answers as a comma-separated list.) sqrt(x + 1) = x^2 − x x = ?

48. ## trig

Find all solutions of cos (x) + 1/2 sec (x) = -3/2 in the interval (2pi, 4pi) (Leave your answers in exact form and enter them as a comma-separated list.)

49. ## Algebra 2

1. The roots of the quadratic equation z^2 + az + b = 0 are 2 - 3i and 2 + 3i. What is a+b? 2. Find all pairs of real numbers (x,y) such that x + y = 6 and x^2 + y^2 = 28. If you find more than one pair, then list your pairs in order by increasing x value,

50. ## precal

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) cos θ = 0.32

51. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. Use n to denote any arbitrary integer values. If an answer does not exist, enter DNE.) f(θ) = 4 cos θ + 2 sin^2 θ

52. ## precalculus

Find all solutions of the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) tan^2 θ − 3 = 0

53. ## Calculus

Using inverse trigonometric functions, find a solution to the equation cos(x)=0.2 in the interval 0â‰¤xâ‰¤4Ï€. Then, use a graph to find all other solutions to this equation in this interval. Enter your answers as a comma separated list. Thank

Find all the zeros of the function. (Enter your answers as a comma-separated list.) f(x) = (x + 3)(x − 7)2 X=

55. ## pre calc

Find all zeros of the polynomial. (Enter your answers as a comma-separated list.) P(x) = x3 − 11x2 + 33x − 35

56. ## Math

Find the solutions of the equation. (Enter your answers as a comma-separated list.) x^4 = 625

57. ## help ?

Let f(x) = (x − 3)^−2.Find all values of c in (1, 4) such that f(4) − f(1) = f'(c)(4 − 1).(Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)

58. ## college algebra

Find all real solutions of the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) x4 + 27x = 0

59. ## Trigonometry

Find all solutions of 4 (cos (x)**2)-1=0 in the interval (6pi, 8pi). (Leave your answers in exact form and enter them as a comma-separated list.)

60. ## Calculus

Find all values of x in the interval [0, 2π] that satisfy the equation. (Enter your answers as a comma-separated list.) 18 + 9 cos(2x) = 27 cos(x)

61. ## calculus

For what values of r does the function y = erx satisfy the differential equation y'' − 8y' + 2y = 0? (Enter your answers as a comma-separated list.)

62. ## Trigonometry

Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) 10 sin^2 x = 3 sin x + 4; [0, 2π)

63. ## GED MATH

You are given an equation of the form y = ax2 + bx + c. y = 4x2 + 2x − 3 (a) Use a graphing utility to graph the equation and to estimate the x-intercepts. (Use a zoom-in process to obtain the estimates; keep zooming in until the first three decimal

64. ## Calculus URGENT

Find the number c that satisfies the conclusion of the Mean Value Theorem on the given interval. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = √x [0, 9] c=? I've tried quite a few different answers

65. ## Algebra

Solve each equation using the quadratic formula. (Enter your answers as a comma-separated list.) x^2 -2x +10=0

66. ## calc

If x2 + y2 = 100 and dy/dt = 9, find dx/dt when y = 8. (Enter your answers as a comma-separated list.)

67. ## math

Solve the quadratic equation by factoring. (Enter your answers as a comma-separated list.) 25x^2 + 30x + 9 = 0

68. ## Calculus

Solve the quadratic equation by factoring. (Enter your answers as a comma-separated list.) 5x2 − 23x = −12

69. ## algebra 1

Find the complete solution set. (Enter your answers as a comma-separated list.) x^3 +8x^2+5x-14=0; {1}

70. ## calculus

If f ''(x) = x3(x−1)3(x+5)2, find the x-values for all the points of inflection. (Enter your answers as a comma separated list.)

71. ## calculus

Find any critical numbers of the function. (Enter your answers as a comma-separated list.) g(t) = 3t ln t

72. ## Chelsea

Solve the equation. (Find only the real solutions. Enter your answers as a comma-separated list.) x + 2 = 38 − (x/2)

73. ## algebra

Find the real solutions of the equation. (Round your answers to three decimal places. Enter your answers as a comma-separated list.) 3.8x4 − 1.7x2 = 2.8

74. ## Trigonometry

Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) cos(x)(9cos(x) + 4) = 4; [0, 2π)

75. ## Pre-Calc

Solve the quadratic equation by factoring. Check your solutions in the original equation. (Enter your answers as a comma-separated list.) x^2 + 2ax + a^2 = 0

76. ## Algebra

Find the real zeros of f and the x-intercepts of the graph of f. (Enter your answers as a comma-separated list. Separate multiple ordered pairs with commas.) f(x) = −x2 + 6x + 16

77. ## Calculus

Solve the equations below exactly. Give your answers in radians, and find all possible values for t in the interval 0≤t≤2π. If there is more than one answer, enter your solutions in a comma separated list. (a) sin(t)=2/√2 when t= (b) cos(t)=1/2 when

78. ## math

We consider the non-homogeneous problem {y''-16y} = {256x^{2}} First we consider the homogeneous problem {y''-16y} = 0 : 1) the auxiliary equation is a r^2+br+c = =0 . ________________ 2) The roots of the auxiliary equation are (enter answers as a comma

79. ## Calculus

Find all values of x in the interval [0, 2π] that satisfy the equation. (Enter your answers as a comma-separated list.) 3 sin(2x) = 3 cos(x)

80. ## math

(a) Complete the square by writing in the form . Note: the numbers and can be positive or negative. x^2-14x-17=(x-7)^2+ (b) Solve the equation by completing the square or using the quadratic formula. If there is more than one correct answer, enter your

81. ## Trigonometry

Solve the equation for exact solutions in the interval 0 ≤ x < 2π. (Enter your answers as a comma-separated list.) sin 2x cos x + cos 2x sin x = 0

82. ## Mathematics

Find the zeros of the function algebraically. (Enter your answers as a comma-separated list.) f(x) = 4x + 3

83. ## precal

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) tan θ = 1

84. ## Math

Find all real solutions of the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) 17x3 − x + 3 = x3 + 24x2 + x

86. ## Trigonometry

Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) 10 sin^2 x = 3 sin x + 4; [0, 2π)

87. ## Trigonometry

Use inverse trigonometric functions to find the solutions of the equation that are in the given interval, and approximate the solutions to four decimal places. (Enter your answers as a comma-separated list.) 10 sin^2 x = 3 sin x + 4; [0, 2π)

88. ## Pre-Cal:(Cont.)

[Note: I've tried this problem 4 times already and still have it wrong. I know the steps to doing it but for some reason its wrong. an someone please help me get these answers for (b).] An equation is given. (Enter your answers as a comma-separated list.

89. ## Pre-Cal

Find all Real solutions of the Equation: (ENter as comma sparated answers, if there are no real solutions then just leave as NRS) x^(4/3)-9x^(2/3)+14=0 x=?

90. ## algebra

solve the equation. Enter the answer as a comma-separated list. if there is no real solution, enter no real solution. x upper 2 - 10x+20=0

91. ## Calcalus

Solve the equations below exactly Give your answers in radians, and find all possible values for t If there is more than one answer, enter your solutions in a comma separated list (a) sin(t)= sqroot(2)/2 when t= (b) cos(t)=1/2 when t= (c) tan(t)=-1 when t=

92. ## precalc

Solve the equation. (Enter your answers as a comma-separated list.) 5x^2e^(−2x) − 3x^3e^(−2x) = 0

93. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) h(t) = t^(3/4) − 3t^(1/4)

94. ## Math

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x)=x^(4/5)(x − 6)^2

95. ## algebra

Find A ∪ B. (Enter your answers as a comma-separated list.) A = {2, 4}, B = {0, 1, 2, 3, 4, 5}

96. ## calculus

If x^2 + y^2 = 100 and dy/dt = 6, find dx/dt when y = 8. (Enter your answers as a comma-separated list.)

97. ## Algebra

Solve the following quadratic equation by completing the square. (Enter your answers as a comma-separated list.) a^2-12a+52=0

98. ## algebra

Use the Quadratic Formula to solve the equation. (Enter your answers as a comma-separated list.) 13x^2 + 1 = −10x

99. ## Algebra

Use the Quadratic Formula to solve the equation. (Enter your answers as a comma-separated list.) 13x2 + 1 = −10x show in steps

100. ## algebra

Solve | 4 x+ 4 | = 3. Enter your solutions in a comma-separated list. x = I came up with -1/4 which is wrong