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Older Activity
03-13-2018,
12:47 PM
Indranil
started a thread
If 2^x = 10, then how to calculate the value of 'x'?
in
Intermediate/Advanced Algebra
If 2^x = 10, here how to calculate the value of 'x'?
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36 replies | 716 view(s)
03-13-2018,
05:49 PM
ilovemath10
started a thread
If f(x) = 2x-5x^2 and g(x) = 5x+2, what is f(4)?
in
Intermediate/Advanced Algebra
If f(x) = 2x-5x^2 and g(x) = 5x+2, what is f(4)? Possible answers include -2376, -1584, -362, -50, or none of these.
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16 replies | 250 view(s)
03-14-2018,
05:01 PM
englewood
started a thread
Factorise expression HELP: Does 8ax + 40cx + 3a +18c equal (8x + 3)(a + c) ?
in
Beginning Algebra
Hello, I hope you can help me, I'm trying to Fully Factorise this Expression. 8ax + 40cx + 3a +18c My result is below 8ax + 40cx + 3a +...
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13 replies | 335 view(s)
03-13-2018,
09:53 PM
Indranil
started a thread
how to calculate the value of 'x', If 16^x = 2?
in
Intermediate/Advanced Algebra
How to calculate the value of 'x', If 16^x = 2?
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12 replies | 281 view(s)
03-13-2018,
06:14 AM
Matt23
started a thread
Factorise x^4 - x^2 + 1 fulling by completing the square
in
Beginning Algebra
Hello, I need assistance with this following question: Factorise fully x4- x2 + 1 by completing the square
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9 replies | 278 view(s)
03-13-2018,
10:49 AM
davesterrr
started a thread
what is the integral of 2^(2x)? need help tonight, exam is tomorrow
in
Calculus
So my teachers notes say: 2^(2x) = 2^(2x) / 2Ln(2) why is it 2 times ln(2) instead of just ln(2)? thank you
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10 replies | 241 view(s)
03-12-2018,
04:26 PM
robertvitoriano
started a thread
F(x) = int[a,x]f(t)dt = x^3-2x^2+x-a; find "a", range where F(x)>0, area of region
in
Calculus
2. Consider the following function: . . .\displaystyle F(x)\, =\, \int_a^x\, f(t)\, dt\, =\, x^3\, -\, 2x^2\, +\, x\, -\, a,\quad (a\, \neq\, 0) ...
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10 replies | 304 view(s)
03-15-2018,
06:59 AM
MathSelfLearn
started a thread
Mathematics: Wanting to re-learn from the ground up, through undergraduate classes
in
Arithmetic
Dear All, For a number of reasons my mathematical skills are very poor. I do however want to compensate for this deficiency in my education by...
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7 replies | 239 view(s)
03-12-2018,
10:31 PM
Janlloyd
started a thread
Combination Problem (Please help)
in
Probability / Statistics
I've been stuck on this specific problem, "John's Pizzeria offers 3 choices of crust, 3 choices of cheese and 10 choices of toppings. If topping...
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7 replies | 109 view(s)
03-14-2018,
05:38 PM
apple2357
started a thread
2 to the power of root 2
in
Intermediate/Advanced Algebra
Does 2 to the power of root 2 mean anything? It doesn't make any sense to me when thinking about basic indices?
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7 replies | 196 view(s)
Yesterday,
09:15 PM
ucanbizon
started a thread
2 equations and 2 unknown seemed easy to solve but not.
in
Intermediate/Advanced Algebra
Hi, I hope I am at the correct part of this forum to ask following question. I have 2 equations with two unkown (x and y) A=(b-x)^2 +...
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5 replies | 84 view(s)
03-13-2018,
07:04 AM
MathTy
started a thread
Differentiate y = x^2 e^{2x}, = x^2 ln(x), = sin(x)/x, = sqrt[x]/cos(x), = 2 sin(...
in
Calculus
a) Differentiate the following products with respect to x. . . .\mbox{i. }\, y\, =\, x^2\, e^{2x} . . .\mbox{ii. }\, y\, =\, x^2\, \ln(x) b)...
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5 replies | 152 view(s)
03-11-2018,
07:16 PM
Alfredo Dawlabany
started a thread
How to solve an integral of absolute value of sin finction ??
in
Calculus
\int_{0}^{2\pi } \left | sin(\frac{n\theta -\theta }{2}) \right |d\theta How can we solve this integral without using correction factors thing...
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7 replies | 197 view(s)
03-14-2018,
06:23 PM
destocot
started a thread
Calc 2 - Cross Sectional Area ("blade"): Consider the parabola y=25−x^2....
in
Calculus
I'm not understanding how to approach this problem: An object (which we will call a "blade" for lack of a better word) is obtained as follows....
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7 replies | 187 view(s)
03-11-2018,
08:29 PM
richiesmasher
started a thread
State a pair of values from p and q
in
Intermediate/Advanced Algebra
T is the matrix \begin{bmatrix} 2q &0 \\ p& p \end{bmatrix} They asked to find the determinant of T which I did and that is 2pq. Then...
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7 replies | 122 view(s)
Yesterday,
01:44 PM
doughishere
started a thread
Limits - split from Limits at Infinity: lim[x->-infty](1-4*cbrt[x^2])/(9+10x) = ...
in
Calculus
Another question. Im pretty sure this is wrong also. Edit: Ok this is really difficult And excessively time consuming translating the latex...
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7 replies | 108 view(s)
03-12-2018,
08:49 PM
DonaldMurray1
started a thread
Calculus: Derive eqns for temp probe from Newton's Law, data points
in
Calculus
I need help with the last page, I have been trying to do it for my spring break, but I just don't get it. A temperature probe is placed in a cup...
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4 replies | 269 view(s)
03-16-2018,
01:23 PM
tsp216
started a thread
Is my calc. for triple integral correct? int[B]x^2y^2z^2 dV = 1/5, B={0 <=x<=y<=z<=1}
in
Calculus
So I'm asked to calculate the triple integral \iiint_{B} x^2 y^2 z^2 dV for a region B defined as 0 <=x<=y<=z<=1. My setup is therefore ...
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5 replies | 159 view(s)
03-14-2018,
12:41 PM
doughishere
started a thread
Limits at Infinity: lim[x->-infty](1-4*cbrt[x^2])/(9+10x) = ... = 0 ?
in
Calculus
Im not sure if im pulling this out of my a** or what...im not confident in this answer. Is this right? Problem 11: Find the limit, as x\,...
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5 replies | 136 view(s)
03-16-2018,
12:15 PM
Eigendorf
started a thread
Prove that one trig function equals another (too lengthy to include in title)
in
Geometry and Trig
Hello! I'm trying to show that one function is equal to another but I'm not sure how to peform the operations to show that they are equal. I'm...
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5 replies | 100 view(s)
03-15-2018,
09:28 AM
lizhelpme
started a thread
Prove that sum of 1/2 n(n+1) and 1/2 (n+1)(n+2) is always a square
in
Intermediate/Advanced Algebra
Hi, I need to help my step son with his exams, I can answer most of the questions except this selection - can anyone help me? 1. n is an integer ...
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3 replies | 186 view(s)
03-16-2018,
10:57 PM
TheFallen018
started a thread
Integration Substitution
in
Calculus
Hi, I seem to be having a bit of trouble with this question I came up against. I seem to be lacking in my intuition when it comes to u...
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4 replies | 78 view(s)
03-15-2018,
06:39 PM
me do
started a thread
Find the locus of points (x,y,z) such that vector from (2,−1,4) to (x,y,z) is...
in
Calculus
Hi, I'm new and I don't know if this the correct place to send my problem. Any way ,please solve this prob. * Find the locus of points (x,y,z)...
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3 replies | 146 view(s)
03-12-2018,
08:01 PM
Denis
started a thread
mathematical word?
in
Math Odds & Ends
epilog ?
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5 replies | 132 view(s)
03-14-2018,
11:01 AM
gibbs-909
started a thread
Sound localisation using multilateration?
in
Geometry and Trig
Hello. I'm working on a project, where I'm trying to locate the position of a sound source. I've got an array of 4 microphones, 3 in a triangle and...
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3 replies | 131 view(s)
03-11-2018,
09:41 PM
PM123
started a thread
Finding the slope of tangent line x = 30 degrees for f(x) = sin(x)
in
Calculus
The problem is: Find the slope of the tangent line at x = 30 degrees for f(x) = sin(x). Using the derivatives formula, I got: lim h->0 = /h ...
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3 replies | 111 view(s)
03-15-2018,
12:58 PM
rayted
started a thread
Calculate average with a mutiplier
in
Finance/Business Math
Hi guys, First time poster. I have a query from my boss who wants this information: per quarter these are the participants: Q1 2017 –...
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4 replies | 100 view(s)
Yesterday,
09:08 PM
ammelton1990
started a thread
Word problems. I am not sure what level of math the problem is.
in
Arithmetic
I do not know how to start to solve this. My car speedometer measures 5 MPH more than the speed at which I am actually traveling. If my car...
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4 replies | 93 view(s)
03-16-2018,
11:19 AM
MatthewSA
started a thread
stumped by this problem ("expansion of products"): given (x+b)(x-1)=x2+3x-4, find "b"
in
Beginning Algebra
Question is find the value of 'b' in the equation: (x+b)(x-1)=x2+3x-4 I reduced the equation as follows: x2-x+bx-b=x2+3x-4 x2-x+bx-b=x2+3x-4...
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4 replies | 76 view(s)
Yesterday,
12:22 PM
ccheney
started a thread
Abstract Math Help
in
Advanced Math
Hi. I've been having some problems with this question. The game begins with n people on an island. The people are numbered 1 through n. Each day,...
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4 replies | 73 view(s)
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