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If f(x) {:(=(sin4x)/(5x)+a", ...

If f(x) ` {:(=(sin4x)/(5x)+a", if " x gt 0 ),( = 6x+4 -b ", if " x le 0):}` is continuous at x = 0 , then : ` a+ b = `

A

`1/15`

B

3

C

`-14/5`

D

`16/5`

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The correct Answer is:
a,b,c,d
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