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Solution 21690: Multiplying a Matrix Row by a Value on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.

...he home screen of the calculator. 5) Press [2nd] [MATRIX], scroll over to MATH, scroll down to  E: *row( and press [ENTER]. This will paste the *row( command onto the home screen. 6) The syntax for the *row( command is: *row(single mulitplied value,matrix name,matrix row). 7) For this example, in...
https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/21690

Solution 12215: Exchanges or Upgrades of TI Graphing Calculators.

... Knowledge Base Knowledge Base Search Does TI offer exchanges or upgrades for TI graphing calculators? Texas Instruments does not have a policy that allows users to exchange one model of a calculator for another. TI also does not trade out one model calcul...
https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/warranty-replacement-options/12215