# Pre- Calculus

21,894 results, page 85
1. ## Pre-Calc Helppp!!!

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that B1 is smaller than B2.) a = 39, c = 40, angle A
2. ## 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
3. ## pre calc

Sam Bordner can dig his garden in 4 hours end Elsie Bordner takes the same amount of time. After working together for an hour, their son Gregory helps them finish in just 30 minutes. How long would it have taken gregory to dig the garden by himself? Can
4. ## Math Pre-Cal (Exponential Functions)

The federal minimum wage was raised to \$1.00 per hour in 1956. It was raised to \$2.00 per hour in 1974. If it had continued to increase at this same exponential rate, what would it be in 2016? I tried working this problem and got ~\$10.08 for 2016. I'm not
5. ## Science Earth

Label the year and name of each geologic area on your geologic time scale. Using the 1 cm = 10 million years scale, figure out and measure each distance below from the PRESENT line. Pre-Cambrian Era = 4.6 Billion years ago = _______________________ cm from
6. ## Pre-Algebra

Is this correct? If I'm mistaken, please correct it for me, and show me how. Thanks. [Fractions, Decimals, and Percents.] 33 & 1/3 of \$90 = \$21.00 100% of 500 = \$500 1% of 500 = \$5.00 50% of 70 = \$35.00 100% of 70 = \$70.00 Thanks, you don't have to tell me
7. ## Pre calc

A boat is going 30 mph with a direction of 100 degrees east of north. The water current is 15 mph with a direction of 22 mph. What is the magnitude of boat and direction
8. ## Calculus

3) Consider rectangles located as shown in the first quadrant and inscribed under a decreasing curve, with the lower left hand corner at the origin and the upper right hand corner on the curve y = sqrt(9 - x2) Find the width, height and area of the largest
9. ## Pre-Calc

1.) Find (f + g)(x) when f(x) = x + 2 and g(x) = x - 2. 2.) Find (f - g)(x) if f(x) = 2x - 5 and g(x) = 4. 3.) Given f(x) = 4 and g(x) = 2x - 1, find (f - g)(x).
10. ## pre calc

find all solutions on 0 is greater than or equal to theta < 2pi cos theta= 2sqrt3/3 4-1/2sin theta= (-16+sqrt3)/4 3(sqrt3)= -3cot theta -2=-1-2sin theta
11. ## Calculus 1

Find constants a and b in the equation f(x)= ax^b/(ln(x)) such that f(1/3)= 1 and the function has a local minimum at x= 1/3
12. ## calculus

solve the differential equations subject to the given conditions. dy/dx= 4x^1/2 y=21 of x=4 is this derivative?!
13. ## calculus

Find critical points of f, and the extrema of f on the given interval. a)f(x) = x^4-10x^2; [0,3] b)f(x) = (x/e^x); [0,2]
14. ## CALCULUS

An equation of the line tangent to the graph of (5x - 1)/(3x + 1) at the point where x = 1 is? Any ideas?
15. ## Calculus

How do I find the area of the region bounded by the graphs of the given equations? y=x+20; y=x^2
16. ## Calculus

Show that non positive rational number, x, exceeds its cube, x^3 by exactly 1.
17. ## Calculus

Find an equation of the tangent line to the graph of x^2+3y^2=4 at the point (1,1) A. y+1=-1/3(x+1) B. y-1=-x/3y(x-1) C. x+3y=2 D. y-1=-1/3(x-1) E. None of these
18. ## calculus/derivatives

I need to find the derivative and can't do them when they are raised to powers? Thank You. m(x)x^5 - 5x^3+7x -4)^10 (4x^9 +19)^23 this on is tuff!
19. ## Calculus

Find the critical numbers of the function. h(t) = t3/4 − 5t1/4
20. ## Calculus

Find the derivative for f(x)=-x^2+x Do I put the -x^2 as a denominator? How would I solve it if that's what I'm supposed to do?
21. ## calculus

find one point on the graph of y= x+2cosx such that the tanget is horizontal
22. ## Calculus

h(t)= -16t^2 + v0t. How fast is the object moving after 5 seconds?
23. ## Math (calculus)

If y = 2x^3 - 4x and dx/dt = 4, find dy/dt when x = 1. Please show me how to solve this problem with steps.
24. ## calculus

Find the equation of the tangent line to the curve x^3 + xy^2 =5 at the point (1,2).
25. ## Calculus

Determine whether the sequence is divergent or convergent. a(sub n)=(−1)^n(sin(2/n))
26. ## Calculus AP

areas between the curves x=y^2-2, x=y, y=3. int[a,b](f(y)-g(y)) dy i know how to graph. but im have problem with integral.
27. ## calculus

Solve lim x->7+ as....sqrt(x-7)^3/(x-7). I found that it equals 0, but I don't know if I did everything right.
28. ## BC Calculus

Use linear approximation to estimate sec^2(pi/4 + .025) Need help quickly please!! :)
29. ## calculus

Find the equation of the tangent line to the graph of the function f(x)=x-3/3x-5 at x=1
30. ## Calculus

I've been having a hard time with these lately... could someone explain it to me? Find f '(a). f(x) = (3x^2 − 3x + 4)
31. ## Calculus

For which of these functions f(x) does limit as x approaches negative infinity f(x)=2 A. (x-2)/(3x-5) B. 2x/sqrt(x-2) C. (2x^2-6x+1)/(1+x^2) D. (2x-1)/(x^2+1) E. None of these
32. ## Calculus

Find the slope of the tangent line to the curve 2(x^2 + y^2)^2 = 25(x^2 - y^2) at the point (3,1). Thank you very much for your help.
33. ## Calculus

Find two numbers whose difference is 132 and whose product is a minimum.
34. ## Calculus

6) Evaluate the indefinite integral. ∫cosx/(7sinx+35)dx
35. ## CALCULUS - HELP

I am trying to solve 0=1-asin(a) for a, but I have reached a dead end at sin(a) = 1/a. From here I'm not sure what to do.
36. ## Calculus

How can I show that the function F (x)= the integral from 2x to 5x of 1/ t dt is constant on the interval (0, +∞).
37. ## Calculus

consider the function f(x) = (x if x<1 (1/x if x>or equal to 1 Evaluate the definite integral: int_{-2}^{3} f(x)\,dx =
38. ## Calculus

I need help solving for this final problem to complete my assigment. Please help! Solve for x: ln(x^4)-ln(x^2)=2

determine the coordinates of two points on the plane with equation 5x + 4y - 3z = 6
40. ## calculus

solution for limit as delta x approaches 0 (1-cos4x/1-cos2x)
41. ## Calculus

Find the maximum area of a rectangle that lies above the x axis and below y=9-x^2
42. ## Calculus

Find the maximum and minimum product of 2 numbers who sum is 5
43. ## Calculus

find the volume generated when the ellipse x^2/9 + y^2 = 1 is rotated around the line y=5
44. ## Calculus

if you have g(x)=ln(x^10)+e^ln(x) would you just get 1/x^10+e^ln(x) or am i wrong the way it was explained to me that with e the derivative is just wat it is you don't change it
45. ## Grade 12 Calculus University

Hello ^___^ Please help me! Thank you very very much! Determine if the planes are parallel. [x,y,z] = [1,2,2] + s[0,-1,0] + t[0,0,1] [x,y,z] = [1,0,-3] + s[0,0,1] + t[-1,0,0] thank you ^__^Y
46. ## calculus

evaluate the integral I= ∫(0,∏/4) ((5-3e^(-tanx))/(cos^(2)x))dx
47. ## Calculus

Find the general indefinite integral ∫ v(v3+5)2dv

find the equation for the line tangent to the curve at the given point. y=((x^2)+1)/((x^2)-1) at (2, 5/3)
49. ## Calculus review

use the first derivate test to locate the maxima and minima of y = x^(1/3)

find derivative of: f(x)=e^2 I know that b/c e is a constant the answer is 0, but how do I show that in my work?

find the slope of the tangent line to y^4 = 3x^2 - 2x at the point (1,1)

find dy/dx by implicit differentiation a) xy + x^5y^2 + 3x^3 - 4 = 1 b) lny = cos x thank you
53. ## calculus

Hey I am working on differentiation/quotient rule for this problem...can someone help me? x^2-3/x-2.
54. ## Calculus

Which of the following functions does not have a derivative of zero? A. y=-1/100 B. y=4(pi)^2-9 C. y=sin^2x+cos^2x D. y=cscxtanxcosx E. All do
55. ## Calculus

Find the value of c where the line l tangent to the graph of y=2.5*5^x at (0,2.5) intersects the x-axis
56. ## Calculus

Find the value of c where the line l tangent to the graph of y=2.5*5^x at (0,2.5) intersects the x-axis
57. ## calculus

pls integrate and differentiate e^x^2 and x/y square root of x^2+y^2 in terms of x.
58. ## Calculus

L'hopital's question below: lim x -> 0 from the positive direction of ( 5^(sin(x)) - 1 )/ (x)
59. ## AP Calculus

Find all points on the graph of f(x)=-x^3+3x^2-2 where there is a horizontal tangent line.
60. ## Calculus

Find if there are any vertical asymptotes: g(theta)= (tan4theta)/(4theta)
61. ## Calculus

Write the sum using summation notation. 2 + 5 + 8 + 11 + ... + 29 Also, I know that it is going up by 3 units. But I am not sure how to get it into the form below: example: 15 ‡” k +3 k-1
62. ## calculus

what is the 2nd derivative of: 1-xy = x-y i get (-y-1)/(x-1) for the first the second i know is (-y-1)/(x-1)^2 but i keep getting (0)/(x-1)^2 please show me the steps i should be taking and if possible what i did wrong
63. ## AP Calculus

Find the derivative for f(x)=-x^2+x Do I put -x^2 on the denominator? How would I solve it if that's the case?
64. ## calculus

find the limit. lim (5-e^x)/(5+3e^x) (x-> infinity) how would i go about solving this? thank you in advance to anyone who can help me.
65. ## Calculus

Show that Rolle's Theorem applies to the given function for the given values of x: x=-1 and x=4 for f(x)=3x-x^2+2.
66. ## AP Calculus

For which of these functions f(x) does limit as x approaches negative infinity f(x)=2 A. (x-2)/(3x-5) B. 2x/sqrt(x-2) C. (2x^2-6x+1)/(1+x^2) D. (2x-1)/(x^2+1) E. None of these
67. ## calculus

Integrate sinx+cosx/rootsin2x with respect to dx...plzz help me
68. ## calculus

select the equations of all lines through the orgin that are tangent to the curve y=x^3-8x^2-7x
69. ## Calculus

Find dy/dx using implicit differentiation of xy + sin^2y=10350. Is it -y/(x+2siny)
70. ## calculus

Find the equations of the tangents to the curve x^2+y^2=25 which pass though the point (-1,7)
71. ## Calculus

Consider f(x)=x^3-x over the interval [0,2]. Find all the values of C that satisfy the Mean Value Theorem (MVT)
72. ## Calculus

If 2x^3 + 2xy - y^2 = 6, then approximate the equation of the tangent line at point x = 1.44
73. ## calculus

Find an equation of the tangent line to the curve at the given point. y^2=x^3 (2-x) (1,1)
74. ## calculus

Evaluate ∬(x^2+y^2)^2/(x^2y^2) dx dy over the region common to the circles x^2+y^2=7x and x^2+y^2=11y.
75. ## math-calculus

x-1/x+1 = 2x/15 (15)(x-1) = (2x)(x+1) 2x^2-15x+17 do i put this in quadratic formula? i so confused.
76. ## calculus 2

r=1- 3Sin theta¸ find the area enclosed by the inner loop
77. ## calculus 2

use the simpsons rule with n=10, arc length y=^3sqaure root x, for 1<=x<6
78. ## math - calculus BC

find a power series representation of: f(x)=((x^2)-1)*sin(x)
79. ## calculus

For the vectors x=(0,6,-5), y=(2,1,4) and z=(-2,3,-1) what is the value of (2x+y)·(3y-z)? (dot product question and each letter is a vector)
80. ## Calculus-Math

Find the derivative of 4 sec^7 (πt − 6)?
81. ## calculus

Find an explicit expression for y' for the curve de fined by 3(x^2 + y^2)^2 = 100xy.
82. ## Calculus

Let f(x) = x ^3. The equation of the tangent line to f(x) at x = 5 is y=75x - 250 What is the approximation for 4.6 ^3?
83. ## Calculus(URGENT PLS!!!)

Find the integral of (e^cosx)sinx
84. ## Calculus

y = √3x + 2 cos(x), 0 ≤ x < 2π Find a derivative y'.
85. ## Calculus

How many tangents does the graph of f(x)=(x-1)^2(x-3)^2 have? I found out the derivative of f(x)=(x-1)^2(x-3)^2 f'(x)=4x^3 - 24x^2 + 44x -24 What do I do next?
86. ## calculus

Find the equation of the tangent to the curve sin(x+y)=xy at the origin.
87. ## Did I do this right?-Calculus

y' and y'' for x^2- xy + y^2 = 3 y'= (y-2x)/(2y-x) y'' = [(y'-2)(2y-x)] - [(2yy' - x)(y- 2x)]/ ((2x-y)^2) final answer for second derivative is: [2y^2- 5xy + 2x^2 - 2y^3 + 8xy^2 - 8x^2y/ ((2x-y)^3)] - [(4y + 2x + xy - 2x^2)/((2y-x)^2)] is this right. thank
88. ## Urgent Calculus Help 2

Find the equation of the tangent line to the graph of f(x) = 6x ln(x + 4) at x = 2.
89. ## calculus

Find the surface area generated when y = (x^3/12) + (1/x), from x=1 to x=2 is rotated around the x-axis.
90. ## Calculus-HELP PLZ !!!!

Find the complete general solution to the second order DE: 4y'' - 9y = 0
91. ## Calculus

Find the complete solution to the 2nd ODE: 2y''+3y'+y=t^(2)+3sin(t)
92. ## Calculus (Limits)

f(x) is a function differentiable at x=1 and f′(1)=1/13. What is the limit of (x^3 - 1)/f(x) - f(1) as x approaches 1?
93. ## Calculus

find all points at the curve x^2y^2+2xy=3 with the slope of the tsngent is -1
94. ## calculus 2

find the indefinite integral showing all work. x^3(x^4-11)6dx
95. ## calculus

An equation of the line tangent to the graph of f(x) = (4x2 - 8x + 3)4 at the point where x = 1 is:
96. ## calculus

How many horizontal tangent lines exit to the curve f(x) = x^cos(x)?
97. ## calculus

Find the area of the region bounded by the graph of the equation 2y^2=x+4 and x=y^2
98. ## calculus

Given ƒ(x) = 2x^2 - 3x - 1 find the slope and equation of the tangent line to ƒ at the point (1, -2)
99. ## calculus

show that an integral of the form ∫00,a e^(-px) dx is convergent if p>0 and divergent if p<0
100. ## calculus

find dy/dx for y=arctan(x/2) i'm getting 4/(x^2+4) my friend is getting 2/(4+x^2) could someone point me in the right direction? tahnk you