Question Number 94124 by M±th+et+s last updated on 17/May/20
$$\mathrm{20}+{a}={a}\:{cosh}\left(\frac{\mathrm{75}}{{a}}\right) \\ $$$${a}=? \\ $$
Commented by MJS last updated on 17/May/20
$$\mathrm{we}\:\mathrm{can}\:\mathrm{only}\:\mathrm{approximate} \\ $$$$\mathrm{I}\:\mathrm{get}\:{a}\approx\mathrm{143}.\mathrm{84} \\ $$
Commented by M±th+et+s last updated on 17/May/20
$${correct}\:{sir}\: \\ $$
Commented by john santu last updated on 17/May/20
$$\mathrm{hi}\:\mathrm{prof}\:\mathrm{mjs} \\ $$