Error for mismatched delimiters in relative long equation.

I am trying to isolate q in this equation, but I am having trouble defining the equaation:

>> eqn = ((xr(1-q))/k - r(1- (x(1-q))/k)-1)((log(xq+1))-q*q/c) + ((r(1-(x(1-q))/k)+1)(1-q)+(i-0)/x)(x/(xq+1)-2q/c) == 0

 eqn = ((xr(1-q))/k - r(1- (x(1-q))/k)-1)((log(xq+1))-q*q/c) + ((r(1-(x(1-q))/k)+1)(1-q)+(i-0)/x)(x/(xq+1)-2q/c) == 0
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Error: Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

I checked the parentheses a few times and they seem fine (I think).

Is it maybe related to log()? I tryed ln() aswell and I get the same error.

Answer 1

[Alex Mcaulley]

I guess you are missing a product(*)

eqn = ((xr(1-q))/k - r(1- (x(1-q))/k)-1)*((log(xq+1))-q*q/c) + ((r(1-(x(1-q))/k)+1)*((1-q)+(i-0)/x)*(x/(xq+1)-2*q/c) == 0)

If not, what equation are you trying to write?

Answer 2

[Teuta Osmani]

Hi. Can you please help me?

I am using the monte carlo method to integrate the following function f = @((2)*(x)*(e^(-x^2))-(3/x^2+2));

it still says: Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters. and I don't know why

Answer 3

[Muhammad Mubashir Iqbal]

solve('sin(y+5)+5*sin(x)+5*cos(5*sqrt(x^2+y^2)+5*cos(x)+5*sin(5*sqrt(x^2+y^2)+5*cos(y)=z',z)))

can anyone suggest what am i doing wrong

[Mehri Mehrnia]

check for mismatched delimiters:

this error happens when inside function you do some operations. such as:

assign variable to z=5*sqrt(x^2+y^2) then use z.

Answer 4

[Andre Vartanians]

booga ooga