# TI-BASIC:Max

**Command Summary**

Returns the maximum of two elements or of a list.

**Command Syntax**

- for two numbers: max(
*x*,*y*) - for a list: max(
*list*) - comparing a number to each element of a list: max(
*x*,*list*) or max(*list*,*x*) - pairwise comparing two lists: max(
*list1*,*list2*)

**Menu Location**

Press:

- MATH to access the Math menu.
- RIGHT to access the NUM submenu.
- 7 to select max(, or use arrows.

Alternatively, press:

- 2nd LIST to access the list menu.
- LEFT to access the MATH submenu.
- 2 to select max(, or use arrows.

TI-83/84/+/SE

1 byte

max(*x*,*y*) returns the largest of the two numbers *x* and *y*. max(*list*) returns the largest element of *list*. max(*list1*,*list2*) returns the pairwise maxima of the two lists. max(*list1*,*x*) (equivalently, max(*x*,*list1*)) returns a list whose elements are the larger of *x* or the corresponding element of the original list.

max(2,3) 3 max({2,3,4}) 4 max({1,3},{4,2}) {4 3} max({1,3},2) {2 3}

Unlike comparison operators such as < and >, max( can also compare complex numbers. To do this, both arguments must be complex -- either complex numbers or complex lists: max(2,*i*) will throw an error even though max(2+0*i*,*i*) won't. In the case of complex numbers, the number with the largest absolute value will be returned. When the two numbers have the same absolute value, the first one will be returned: max(*i*,-*i*) returns *i* and max(-*i*,*i*) returns -*i*.

# Advanced Uses

max( can be used in Boolean comparisons to see if at least one of a list is 1 (true) -- useful because commands like If or While only deal with numbers, and not lists, but comparisons like L1=L2 return a list of values. In general, the behavior you want varies, and you will use the Min( function or the max( function accordingly.

Using max( will give you a lenient test -- if any one element of the list is 1 (true), then the max( of the list is true -- this is equivalent to putting an 'or' in between every element. For example, this tests if K is equal to any of 24, 25, 26, or 34 (the GetKey arrow key values):

:If max(K={24,25,26,34 :Disp "ARROW KEY

To get the element of a real list with the greatest absolute value, use imag(max(iAns.

# Error Conditions

**ERR:DATA TYPE**is thrown when comparing a real and a complex number. This can be avoided by adding +0*i*to the real number (or*i^4*right after it, for those who are familiar with complex numbers)**ERR:DIM MISMATCH**is thrown, when using max( with two lists, if they have different dimensions.