Since the sign of {{MATH_35}} on the interval {{MATH_36}} is {{CMD_37}} {{CMD_38}}positive{{CMD_39}} {{CMD_40}}negative{{CMD_41}} {{CMD_42}} the function {{MATH_43}} must be {{CMD_44}} {{CMD_45}}increasing on the interval {{MATH_46}}{{CMD_47}} {{CMD_48}}decreasing on the interval {{MATH_49}}{{CMD_50}} {{CMD_51}} {{CMD_52}}