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Solve the equation sec^2x - 2 tan x = 4

Posted by xetabeta on August 23, 2014 at 5:15 PM via web.

1 educator answer.

What is the definite integral `int_0^5 1/(x^2 - 3x) dx`

Posted by xetabeta on August 23, 2014 at 4:21 PM via web.

What is lim_(x-> 0)(sqrt(x+5) - sqrt 5)/x

Posted by xetabeta on August 23, 2014 at 4:06 PM via web.

A 4 m long wire is shaped into a square and into a hexagon. What is the increase in area of the...

Posted by carolinesmiths on August 23, 2014 at 2:36 PM via web.

Solve the equation x^3-3x^2-6x+8 = 0

Posted by carolinesmiths on August 23, 2014 at 2:19 PM via web.

What is the equation of the perpendicular bisector of the line joining the points (3,2) and (10,4)

Posted by steve1234 on August 22, 2014 at 7:29 PM via web.

At what point on the curve y = 3x^3 - 4x^2 + 8 is the slope of the tangent 0.

Posted by steve1234 on August 22, 2014 at 7:10 PM via web.

Give an equation with roots 2, 3, 1 - i and 1 + i.

Posted by carolinesmiths on August 22, 2014 at 6:47 PM via web.

Show that (1 + sin x)/(1-sin x)-(1 - sin x)/(1 + sin x) = 4 tan x sec x

Posted by carolinesmiths on August 22, 2014 at 5:52 PM via web.

2 educator answers.

What is the value of (sin x - cos x)^2 + (sin x + cos x)^2 for x = 30 and for x = 60 degrees.

Posted by carolinesmiths on August 22, 2014 at 3:03 PM via web.

Prove tan x + cos x/(1+sin x) = 1/cos x

Posted by carolinesmiths on August 22, 2014 at 2:47 PM via web.

Solve 3x + 2y + z = 10, z + 2y + 3z = 18 and x + y + z = 3 by elimination.

Posted by alicesmith on August 22, 2014 at 6:36 AM via web.

What is `lim_(x->2) (3x^2 - 4x - 4)/(x - 2)` ?

Posted by alicesmith on August 22, 2014 at 5:36 AM via web.

Flying at 300 km/h John can go from his city to New York in 2 hours. If the speed is increased by...

Posted by alicesmith on August 21, 2014 at 8:09 PM via web.

If 1/x + 1/y = 19 and x + y = 2 what is x and y.

Posted by steve1234 on August 21, 2014 at 7:38 PM via web.

Definite integral int_2^8 2/(x^2 - 1) dx

Posted by steve1234 on August 21, 2014 at 6:44 PM via web.

Integration: int (x^2+6*x-7)/(x - 1) dx

Posted by steve1234 on August 21, 2014 at 6:37 PM via web.

What is the solution of the equations x + y + z = 18, x + y - z = 8 and x - y + z = 10

Posted by alicesmith on August 21, 2014 at 5:28 PM via web.

What is the maximum product of two numbers that add up to give 24.

Posted by alicesmith on August 21, 2014 at 2:52 PM via web.

3 educator answers.

What is the maximum value of y = 3x - 18x^2 + 1

Posted by alicesmith on August 21, 2014 at 2:33 PM via web.

How do you solve 1/2x=40?

Posted by chrisfully on August 20, 2014 at 11:38 PM via iOS.

how do you solve d/5=7

Posted by ajdkvk on August 20, 2014 at 11:26 PM via iOS.

What is a example i can use for D=RT and how would i solve it?

Posted by lil-purple-gummybear2014 on August 20, 2014 at 11:25 PM via iOS.

Determine dy/dx using implicit differentiation for y^2*x + 3y*x^2 = 8

Posted by alicesmith on August 20, 2014 at 3:23 PM via web.

What is the slope of the tangent to the curve y = 4x^3 - 3x^2 + 10 at the point (1, 11)

Posted by alicesmith on August 20, 2014 at 2:34 PM via web.

Use the chain rule to find the derivative of (3*sin x + 1)^3

Posted by alicesmith on August 20, 2014 at 5:39 AM via web.

From first principles find the derivative of sqrt(1+x)

Posted by alicesmith on August 20, 2014 at 4:27 AM via web.

Where should the yellow arrow placed to get the red lines as short as possible? (1 image)

Posted by user2708022 on August 19, 2014 at 6:23 PM via web.

What is the x and y intercept of the line through (10, 2) and (3, 1)?

Posted by theta123 on August 19, 2014 at 5:46 PM via web.

Using limits find the derivative of (x + 3)^2

Posted by theta123 on August 19, 2014 at 5:27 PM via web.

What is the value of `lim_(x->oo) log(x + 1) - log x` . Do I need to use derivatives here ?

Posted by theta123 on August 19, 2014 at 5:01 PM via web.

The height of building A is 210 m and the height of building B is 350 m. The two are 240 m away...

Posted by theta123 on August 19, 2014 at 9:31 AM via web.

A) The function g is defined as `g(x)=int_0^x t(1-t)dt` What is the derivative for the function g...

Posted by user2708022 on August 19, 2014 at 9:09 AM via web.

What is the point of intersection of the line x + y = 0 and the curve y = 5x^2 - 4x - 2

Posted by theta123 on August 19, 2014 at 7:00 AM via web.

What is the solution of the set of equations 3x + 5y + z = 1, x - y + z = 8 and x + y - z = 6

Posted by theta123 on August 19, 2014 at 6:26 AM via web.

A class has 100 students. In a group with 80 students the average number of days they are absent...

Posted by theta123 on August 19, 2014 at 5:19 AM via web.

How I calculate these integrals without calculator?

Posted by user2708022 on August 18, 2014 at 4:48 PM via web.

how do you solve 20=3x-1

Posted by anabella123 on August 18, 2014 at 3:14 PM via iOS.

how do you solve 2x-10=16

Posted by ani1110 on August 18, 2014 at 3:08 PM via iOS.

Prove that tan^2x/(1+tan^2x) = sin^2x

Posted by mikerhyme on August 18, 2014 at 1:47 PM via web.

Which of the following equations has real solutions: 3x^2 - 8x + 4 = 0 2x^2 + x - 1 = 0 x^2 + 9 =...

Posted by mikerhyme on August 18, 2014 at 7:28 AM via web.

Where on the line x - y = 8 does the perpendicular from (2, 1) intersect.

Posted by mikerhyme on August 18, 2014 at 7:14 AM via web.

What is the distance of the point (3,2) from the line 3x - 8y = 18

Posted by mikerhyme on August 18, 2014 at 6:42 AM via web.

What is the maximum value of sin x*cos x - tan x ?

Posted by mikerhyme on August 18, 2014 at 5:53 AM via web.

Problem 8: Prove that cos^2x = (cos x*cosec x)/(cotx + tan x) (4)

Posted by mikerhyme on August 18, 2014 at 5:11 AM via web.

Problem 2. A man has a ladder of length 8 m. What is the maximum height he can reach if he props...

Posted by mikerhyme on August 18, 2014 at 4:36 AM via web.

Solve the equation : 2*sin^2 x + cos x - 1 = 0

Posted by mikerhyme on August 18, 2014 at 3:38 AM via web.

Prove that `2*cos^2x - 1 = (1- tan^2x)/(1 + tan^2x)`

Posted by mikerhyme on August 17, 2014 at 8:28 AM via web.

In math terms, which apportionment method (Hamilton, Jefferson, Webster, Adams) is best? include...

Posted by anythingbutteri on August 14, 2014 at 9:18 PM via web.

A cement conduit 100 cm long is constructed so that it has a square exterior and a centered...

Posted by pnswan on August 13, 2014 at 8:26 PM via web.

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