So, it will be E b summation, just a single summation now k equal to 2 to uppercase K alpha k mod squared expected value of R 1 k magnitude squared, beta squared b squared will be equal to plus 1 and of course, this term will also go to 0 because you get expected value of b k.
वह होगा, b2 यहाँ +1 के बराबर होगा, यह टर्म भी 0 होगा क्योंकि आपको bk का अपेक्षित मूल्य मिलेगा।