Anisotropic stars of class one space–time in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e4009" altimg="si17.svg"><mml:mrow><mml:mi>f</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>R</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="script">T</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> gravity under the simplest linear functional of the matter–geometry coupling