If |
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a) |
|
b) |
|
c) |
|
d) |
None of these |
If |
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a) |
|
b) |
|
c) |
|
d) |
None of these |
(d)
Hence, . Now, minimum value of modulus is zero. Since
is cubic, it must vanish for some
other than given in (a), (b), (c)