e^[(-A/111)*1.25]=0.07,A等于多少啊?

问题描述:

e^[(-A/111)*1.25]=0.07,A等于多少啊?
e^[(-A/111)*1.25]=0.07
e等于2.71828
请问A等于多少?

(-A/111)*1.25=ln0.07
A=-111*ln(0.07)/1.25=236.1422913