sin^10x+cos^10x=29/16cos^4 2x

(1-cos2a)^5/32+(1+cos2x)^5/32=29/16*cos^42a(1-cos2x)^5+(1+cos2x)^5=58cos^42xcos2x=t(1-t)^5+(1+t)^5=58t^41-5t+10t²-10t³+5t^4-t^5+1+5t+10t²+10t³+5t^4+t^5=58t^458t^4-10t^4-20t²-2=024t^4-10t²-1=0t²=a24a²-10a-1=0D=100+96=196a1=(10-14)/48=-1/12⇒t²=-1/12 нет решенияa2=(10+14)/48=1/2⇒t²=1/2⇒t=-1/√2 U t=1/√2cos2x=-1/√2 U cos2x=1/√22x=+-3π/4+2πk U 2x=+-π/4+2πkx=+-3π/8+πk U x=+-π/8+πk,k∈z