פתרון
expand (sec(θ)+tan(θ))3(sec(θ)−tan(θ))4
פתרון
sec7(θ)+tan7(θ)−11sec3(θ)tan4(θ)−11tan3(θ)sec4(θ)−sec6(θ)tan(θ)−6sec5(θ)tan2(θ)+14sec4(θ)tan3(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec5(θ)+14tan4(θ)sec3(θ)−6tan5(θ)sec2(θ)−tan6(θ)sec(θ)
צעדי פתרון
(sec(θ)+tan(θ))3(sec(θ)−tan(θ))4
(sec(θ)+tan(θ))3הרחב את:sec3(θ)+3sec2(θ)tan(θ)+3tan2(θ)sec(θ)+tan3(θ)
=(sec3(θ)+3sec2(θ)tan(θ)+3tan2(θ)sec(θ)+tan3(θ))(sec(θ)−tan(θ))4
=(sec(θ)−tan(θ))4(sec3(θ)+3sec2(θ)tan(θ)+3tan2(θ)sec(θ)+tan3(θ))
הפעל את חוק מכפלת הסוגריים=(sec(θ)−tan(θ))4sec3(θ)+(sec(θ)−tan(θ))4⋅3sec2(θ)tan(θ)+(sec(θ)−tan(θ))4⋅3tan2(θ)sec(θ)+(sec(θ)−tan(θ))4tan3(θ)
=sec3(θ)(sec(θ)−tan(θ))4+3sec2(θ)tan(θ)(sec(θ)−tan(θ))4+3tan2(θ)sec(θ)(sec(θ)−tan(θ))4+tan3(θ)(sec(θ)−tan(θ))4
sec3(θ)(sec(θ)−tan(θ))4הרחב את:sec7(θ)−4sec6(θ)tan(θ)+6sec5(θ)tan2(θ)−4sec4(θ)tan3(θ)+sec3(θ)tan4(θ)
=sec7(θ)−4sec6(θ)tan(θ)+6sec5(θ)tan2(θ)−4sec4(θ)tan3(θ)+sec3(θ)tan4(θ)+3sec2(θ)tan(θ)(sec(θ)−tan(θ))4+3tan2(θ)sec(θ)(sec(θ)−tan(θ))4+tan3(θ)(sec(θ)−tan(θ))4
3sec2(θ)tan(θ)(sec(θ)−tan(θ))4הרחב את:3sec6(θ)tan(θ)−12sec5(θ)tan2(θ)+18sec4(θ)tan3(θ)−12sec3(θ)tan4(θ)+3sec2(θ)tan5(θ)
=sec7(θ)−4sec6(θ)tan(θ)+6sec5(θ)tan2(θ)−4sec4(θ)tan3(θ)+sec3(θ)tan4(θ)+3sec6(θ)tan(θ)−12sec5(θ)tan2(θ)+18sec4(θ)tan3(θ)−12sec3(θ)tan4(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec(θ)(sec(θ)−tan(θ))4+tan3(θ)(sec(θ)−tan(θ))4
3tan2(θ)sec(θ)(sec(θ)−tan(θ))4הרחב את:3tan2(θ)sec5(θ)−12tan3(θ)sec4(θ)+18tan4(θ)sec3(θ)−12tan5(θ)sec2(θ)+3tan6(θ)sec(θ)
=sec7(θ)−4sec6(θ)tan(θ)+6sec5(θ)tan2(θ)−4sec4(θ)tan3(θ)+sec3(θ)tan4(θ)+3sec6(θ)tan(θ)−12sec5(θ)tan2(θ)+18sec4(θ)tan3(θ)−12sec3(θ)tan4(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec5(θ)−12tan3(θ)sec4(θ)+18tan4(θ)sec3(θ)−12tan5(θ)sec2(θ)+3tan6(θ)sec(θ)+tan3(θ)(sec(θ)−tan(θ))4
tan3(θ)(sec(θ)−tan(θ))4הרחב את:tan3(θ)sec4(θ)−4tan4(θ)sec3(θ)+6tan5(θ)sec2(θ)−4tan6(θ)sec(θ)+tan7(θ)
=sec7(θ)−4sec6(θ)tan(θ)+6sec5(θ)tan2(θ)−4sec4(θ)tan3(θ)+sec3(θ)tan4(θ)+3sec6(θ)tan(θ)−12sec5(θ)tan2(θ)+18sec4(θ)tan3(θ)−12sec3(θ)tan4(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec5(θ)−12tan3(θ)sec4(θ)+18tan4(θ)sec3(θ)−12tan5(θ)sec2(θ)+3tan6(θ)sec(θ)+tan3(θ)sec4(θ)−4tan4(θ)sec3(θ)+6tan5(θ)sec2(θ)−4tan6(θ)sec(θ)+tan7(θ)
sec7(θ)−4sec6(θ)tan(θ)+6sec5(θ)tan2(θ)−4sec4(θ)tan3(θ)+sec3(θ)tan4(θ)+3sec6(θ)tan(θ)−12sec5(θ)tan2(θ)+18sec4(θ)tan3(θ)−12sec3(θ)tan4(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec5(θ)−12tan3(θ)sec4(θ)+18tan4(θ)sec3(θ)−12tan5(θ)sec2(θ)+3tan6(θ)sec(θ)+tan3(θ)sec4(θ)−4tan4(θ)sec3(θ)+6tan5(θ)sec2(θ)−4tan6(θ)sec(θ)+tan7(θ)פשט את:sec7(θ)+tan7(θ)−11sec3(θ)tan4(θ)−11tan3(θ)sec4(θ)−sec6(θ)tan(θ)−6sec5(θ)tan2(θ)+14sec4(θ)tan3(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec5(θ)+14tan4(θ)sec3(θ)−6tan5(θ)sec2(θ)−tan6(θ)sec(θ)
=sec7(θ)+tan7(θ)−11sec3(θ)tan4(θ)−11tan3(θ)sec4(θ)−sec6(θ)tan(θ)−6sec5(θ)tan2(θ)+14sec4(θ)tan3(θ)+3sec2(θ)tan5(θ)+3tan2(θ)sec5(θ)+14tan4(θ)sec3(θ)−6tan5(θ)sec2(θ)−tan6(θ)sec(θ)