How would i go around solving these equations? 1.) 5(7y+3)=39 2.) 20(21r+40)=100

I apologize if I've asked this question before. There's probably a very simple solution. I'm trying to get all roots over a range of 0-5 for x^3-e^x. with(Student[Calculus1]): for i to nops(Roots(x^3-exp(x),x=0..5)) do evalf(Roots(x^3-exp(x),x=0..5)[i]) end do returns 1.857183860 and 4.536403655 as expected, but seems kinda weird. fsolve(x^3-exp(x)) returns only the first find: 1.857183860 fsolve(x^3-exp(x), x = 0 .. 5) returns only the last find: 4.536403655

I'm attempting to exponentiate a really large number to a anther really large number and using only "^" will give me an overflow error. in my assignment it says to use " &^", but when i type this in, it attempts to exponentiate the ampersand symbol. I'm currently running on Maple 11... i think my problem is i don't know how to use &^ -thank you

I have the following differential equation which governs a circuit analysis problem.. I would like to be able to seperate the V1(t) terms from the V2(t) terms and then move the V1(t) terms to the right hand side. Does anyone know how I can accomplish this with commands in Maple? I am using version 9.5. Thanks!!! Kirk (1/R1+1/R2)*(diff(V2(t), t))-(diff(V1(t), t))/R1+(V2(t)-V1(t))/L+C*(diff(V2(t), `$`(t, 2))) = 0

Hello. I've tried to create function with x[1] variable, but at any time I receive the following error: > f := x[1] -> x[1]; Error, symbol or symbol::type or symbol:=expression expected in parameter list What is the problem here? IIUC x[1] is the element 1 of array x. So does maple forbid usage of array elements in function definitions? Thank you for your time.

Hey Is it possible to specify a domain or boundaries for a function / expression and if so, how to do it? Here is an example of want I want to do: If I have the following function f(x)=x^2 and solve this problem solve(f(x)=4,x) I get the answers x=-2 or x=2, but I want to be able to specify that x has to be greater than 0 (0solve(f(x)=2,x)|x>0 but I can't in Maple. Generally I could use | to assign values and limitations to expressions.

How do i solve for C? C = 23481726526273849572 ^ 10982375684973 mod 2984652746 M e n I was told the proper command was C := M&\^e mod n; OR C := Power(M,e) mod n; but neither work.

Hi, I'm somewhat new to Maple and I have a problem that I can't figure out. I have an excel file that performs a series of calculations and I would like to plot the values from a single cell as an input parameter cell is varied. Is there a way that I can use Maple to do this? I tried exporting a value to the input parameter cell, and then importing the value from the output cell, but the value that gets imported isn't changing as I vary the exported value. If I open the excel file itself, the values have changed, so I know the export is working, but it doesn't seem to want to import the new value from excel.

In Maple,how can I simplify an expression to a better form ? Like this,for example: a^2+2ab+b^2 -> (a+b)^2 a^3+3a^2*b+3a*b^2+b^3 -> (a+b)^3 As I know,simplify() only groups similar terms and some simple computations, doesn't it ? So , how can we do like the above ? I think that Maple must be able to do that , because it's a required utility of a CAS.

I use Maple-11 , especially the Physics and Tensor, Diff Geometry packages, in a worksheet. How do I get to create tensors with a uniform notation for covariant and contravarint indices using Create or Define ? I need tensors like, for instance, A superscript i, subscript j, as in McCONNELL (Abs. Diff Calculus) How do we get a uniform notation for tensors on a worksheet using either the Physics or Diff Geom package ? Are Create and Define equivalent ? Can thye be made to print tensors with the same format, or appearance? Please give me a few examples. Thanks. Radhakrishna Prof Physics

I have get a functionsystem:

I apologize to ask this rather simplistic question, but I am very new to this. I can plot a function such as plot(10*x3, x=1..5); BUT what if the range is only specific points such as x=1, 0,07, 8? What is the syntax for this range?

I'm trying to swap rows of a matrix using the LinearAlgebra package not the linalg one. is there a easy way of doing this?

The special linear group SL(2)consists of all 2 x 2 matrices (with complex elements) having a determinant of +1. Show that such matrices form a group. Note. The SL(2) group can be related to the full Lorentz group in Section 4.4, much as the SU(2) group is related to SO(3). Arfken, and Weber. v/r, thanks,

well, i'm using a Evalution Version Maple .i spend one day time to find how can i change Maple to Document Mode but finally failed. May be Evalution Version doesn't have Work Mode and only have Document Mode? :(