1. Integrate x^x^x^x dx
2. integrate 7^sinx dx
3. integrate e^tanx dx

The first two do not have a closed form solution, but can be approximated with series solutions. The third has a complex solution. Interesting integrals, but I'm wondering why you are asking? I'm guessing these are not homework problems - let me know why you're asking about these and we'll chat some more about them.

Ax^2+bx+c=0
1. if b^2=4ac. There is one solution
2. if b^2>4ac. There are two solutions
3. if b^2<4ac. There are no real solutions

The first two do not have a closed form solution, but can be approximated with series solutions. The third has a complex solution. Interesting integrals, but I'm wondering why you are asking? I'm guessing these are not homework problems - let me know why you're asking about these and we'll chat some more about them.

Yea they are not home work problems. I just want to know if the first 2 question has a analytical solution.

Yea they are not home work problems. I just want to know if the first 2 question has a analytical solution.

I've already pointed out that there is no closed-form solution for these. That's equivalent to saying there are no analytical solutions.

I've already pointed out that there is no closed-form solution for these. That's equivalent to saying there are no analytical solutions.

OK thank you. I'm really grateful