 Hello and welcome to the session. Let us understand the following problem today. Fuse that 9 pi by 8 minus 9 by 4 psi inverse 1 by 3 and is equal to 9 by 4 psi inverse 2 by 2 by 3. The formula that we will be using in our problem is x plus is equal to psi inverse x into 1 minus y square plus y into 1 minus x square and psi inverse 1 is equal to pi by 2. This is the key idea that we will be using in our problem. Now, let us write the solution. The given question can be written as 9 by 4 psi inverse by 3 plus psi inverse 1 by 3 is equal to 9 pi by 2. So, we have to prove this. Now, consider LHS which is equal to 9 by 4 into psi inverse of 2 root by root 2 by 3 plus psi inverse of 1 by 3, which is equal to 9 by 4 psi inverse of using the formula we get 2 root 2 by 3 into under root 1 minus 1 by 3 square plus 1 by 3 into under root 1 minus 2 root 2 by 3 the whole square, which is equal to 9 by 4 by 3 into 2 root 2 by 3 plus 1 by 3 into 1 by 3, which is equal to 9 by 4 into psi inverse of 8 plus 1 by 9, which is equal to 9 by 4 psi inverse of 1, which is equal to 9 by 4 into pi by 2 because psi inverse 1 is equal to pi by 2, which is equal to 9 pi by 8, which is equal to RHS, therefore LHS is equal to RHS hence proved. I hope you understood the problem. Bye and have a nice day.