Given the function `f(x)=(a^x+a^-x)/2 (a gt 0)`. If `f(x + y) + f(x-y) = k f(x). f(y)` then k
139 views · Published 13 October 2018 · 3:48 · Indexed 21 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Given the function `f(x)=(a^x+a^-x)/2 (a gt 0)`. If `f(x + y) + f(x-y) = k f(x). f(y)` then k has the value equal to
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