English employs various symbols to

The teacher said he was stupid.

The teacher, said he, was stupid.

Math also employs various devices (primarily parentheses) to specify order of interpretation or, as it is usually called,

The right argument of a verb is the value of the entire phrase to its right.

Adverbs are applied first. Thus, the phrase

For example:

a=:5 b=:3 (a*a)+(b*b) 34 a*a+b*b 70 a*(a+(b*b)) 70 (a+b)*(a-b) 16 a (+*-) b 16The last sentence above includes the

A fork also has a monadic meaning, as illustrated for the

c=:2 3 4 5 6 (+/ % #) c The verb # yields the number of items in its argument 4 (+/c)%(#c) 4

**Exercises**

4.1 | In math, the expression 3x^{4}+4x^{3}+5x^{2} is called a polynomial.
Enter: x=: 2 (3*x^4)+(4*x^3)+(5*x^2)to evaluate the polynomial for the case where x is 2. |

4.2 | Note that the hierarchy among functions used in math
is such that no parentheses are necessary in writing a polynomial.
Write an equivalent sentence using no parentheses. Answer: +/3 4 5 * x ^ 4 3 2or (first assigning names to the coefficients 3 4 5
and the exponents 4 3 2), as: +/c*x^e |

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