The product of all solutions of the equation e5( ex)2+3=x8, x>0, is :
- e2
- e
- e6/5
- e8/5
Answer
(4) e8/5
Solution
Take e and put t= ex:
5t2+3=8t 5t2-8t+3=0 t1+t2= 85
x1x2=et1et2=et1+t2=e8/5
Answer: (4)
The product of all solutions of the equation e5( ex)2+3=x8, x>0, is :
(4) e8/5
Take e and put t= ex:
5t2+3=8t 5t2-8t+3=0 t1+t2= 85
x1x2=et1et2=et1+t2=e8/5
Answer: (4)
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