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for all x in R if mx^2-9mx+5m+1gt0 then ...

for all `x in R` if `mx^2-9mx+5m+1gt0` then m lies in the interval

A

`(-(4)/(61),0)`

B

`[0,(4)/(61),)`

C

`((4)/(61),(61)/(4))`

D

`(-(61)/(4),0)`

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