t. Taylor Coefficient

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Assign Taylor | m t. 0 0 0 |

The function`h=: u`v t.` is equivalent to`u` except that the function produced by`h t.` is`v` .`` For example, an explicit definition (such as the definition of`exp` below) has no associated Taylor series, but one can be assigned.

       y=: i. 5
       ^y
    1 2.71828 7.38906 20.0855 54.5982

       ^ t. y
    1 1 0.5 0.1666667 0.04166667

       exp=: 3 : '^ y.'
       exp y
    1 2.71828 7.38906 20.0855 54.5982

       exp t. y
    |domain error
    |       exp t.y

       e=: exp`(%@!) t.
       e y
    1 2.71828 7.38906 20.0855 54.5982

       e t. y
    1 1 0.5 0.1666667 0.04166667

       %@e t. y
    1 _1 0.5 _0.1666667 0.04166667

       %@^ t. y
    1 _1 0.5 _0.1666667 0.04166667

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