Thank you very much for your reply, rlopez.

I have two questions.

1.The reason I want eight functions is that I can use it for other computations later. So, can we make the F1~F8 continous, means no jump between branches for v in the range [3405..5054], with the new index rule for RootOf function? If it could be realized, I think that's the best method.

2.If not, the better idea is compute the discrete values of l2 with the corresponding v values, and then eliminate the jump between branches by hand. After that, we get the discrete function l2 values at discrete v values, and the interpolation can be further done. The key is how to distinguish different branches. From the figure derived with fsolve command, there are four branches which have no intersections with the real axis, so it's easy to pull them out. How about the other four? I have no idea.

So, would you like to give me some methods or advices to resolve the two problems above?
I will be very appreciated. Thanks in advance.

if the range is [-4..4,-4..4],the figure would be continuous, so the numpoints option is unnecessary here.

if the range is [-4..4,-4..4],the figure would be continuous, so the numpoints option is unnecessary here.

more featrues for the touch screen,very good.

By the way, what's the time for the release of MapleSim6?

In MapleSim2, a system which includes pade approximation has different simulation result from that of Matlab.

So,would MapleSim6 contain some benchmarks?

thank you very much, acer.
a),it's really rough.
b),on my computer,winxp 32+intel celeron 2.53G, it just plot the interval[0..5],the other is empty.(maple 13)
c) and d) don't meet my demand.

that's an exercise.
two runner run on a ring track(500m) start at same point, their velocity are 60m/min and 50m/min,
every 200m they will rest for 1min,
so what's the time they meet first?(the faster from behind to front)

thank you very much, acer.
a),it's really rough.
b),on my computer,winxp 32+intel celeron 2.53G, it just plot the interval[0..5],the other is empty.(maple 13)
c) and d) don't meet my demand.

that's an exercise.
two runner run on a ring track(500m) start at same point, their velocity are 60m/min and 50m/min,
every 200m they will rest for 1min,
so what's the time they meet first?(the faster from behind to front)

@acer thank you very much for your help,acer.

@acer thank you very much for your help,acer.

thank you, pagan, your method is very helpful.

but why ' ' doesn't work and Int does? It still puzzled me.

would you like to give an explanation? thanks.

still looking for the method of question 1.

thank you, pagan, your method is very helpful.

but why ' ' doesn't work and Int does? It still puzzled me.

would you like to give an explanation? thanks.

still looking for the method of question 1.

maple for windows 8 on arm?

my computer has two cores but the cpu is amd's.

so,I want to know, is there any performance enhancement by using omp_num_threads=2?

if it did, does it for every function in maple? or is there a figure on the acceleration ratio?

thank you in advance

it will be nice that the resolution of exported figure can be changed from right click menu.

@acer ，thank you for your reply

first, I'm wrong, the equation is not the one provided above, it's here:

tan(x*sqrt(cp^2/6450^2-1))*(cp^2/3220^2-2)^2+4*tan(x*sqrt(cp^2/3220^2-1))*sqrt((cp^2/3220^2-1)*(cp^2/6450^2-1)).

theoretically, in the interval cp>0 and cp<3220, x>0 and x<14, there does exist a cuve for the equation,that's the fundamental asymmetric mode for lamb waves.

second, I think maybe you didn't see this page entirely.

By using the method provided from Robert Israel above, the equation

tan(x*sqrt(cp^2/6450^2-1))*(cp^2/3220^2-2)^2+4*tan(x*sqrt(cp^2/3220^2-1))*sqrt((cp^2/3220^2-1)*(cp^2/6450^2-1)).

can be converted to another equation which have definition in the plane x and cp.

But I can't got a resonable initial condition for the differential equation which derived in the method above.

anyway, thank you very much.

finally, I'm still need help.

@acer ，thank you for your reply

first, I'm wrong, the equation is not the one provided above, it's here:

tan(x*sqrt(cp^2/6450^2-1))*(cp^2/3220^2-2)^2+4*tan(x*sqrt(cp^2/3220^2-1))*sqrt((cp^2/3220^2-1)*(cp^2/6450^2-1)).

theoretically, in the interval cp>0 and cp<3220, x>0 and x<14, there does exist a cuve for the equation,that's the fundamental asymmetric mode for lamb waves.

second, I think maybe you didn't see this page entirely.

By using the method provided from Robert Israel above, the equation

tan(x*sqrt(cp^2/6450^2-1))*(cp^2/3220^2-2)^2+4*tan(x*sqrt(cp^2/3220^2-1))*sqrt((cp^2/3220^2-1)*(cp^2/6450^2-1)).

can be converted to another equation which have definition in the plane x and cp.

But I can't got a resonable initial condition for the differential equation which derived in the method above.

anyway, thank you very much.

finally, I'm still need help.