Mathway | Problemi più comuni

Problemi più comuni

Livello	Argomento	Problema	Problema formattato
26301	求解x	a(n)=(-1)^(n+1)e^(n^2)	$a (n) = {(- 1)}^{n + 1} e^{n^{2}}$
26302	求解x	a=38cot(30)	$a = 38 \cot (30)$
26303	求解x	a=5\|sec(2pi(1.91))\|	$a = 5 \| \sec (2 π (1.91)) \|$
26304	求解x	A=8000(1+0.15/2)	$A = 8000 (1 + \frac{0.15}{2})$
26305	求解x	arccos(0)=x	$\arccos (0) = x$
26306	求解x	4cos(x)^2=5-4sin(x)	$4 \cos^{2} (x) = 5 - 4 \sin (x)$
26307	求解x	4cos(x)^2-4 radice quadrata di 2cos(x)+2=0	$4 \cos^{2} (x) - 4 \sqrt{2} \cos (x) + 2 = 0$
26308	求解x	4sec(x)^2-2=0	$4 \sec^{2} (x) - 2 = 0$
26309	求解x	4sin(x)^2cos(x)+2sin(x)^2=0	$4 \sin^{2} (x) \cos (x) + 2 \sin^{2} (x) = 0$
26310	求解x	4sin(2x)^2=1	$4 \sin^{2} (2 x) = 1$
26311	求解x	4sin(x)^2=( radice quadrata di 2)/2	$4 \sin^{2} (x) = \frac{\sqrt{2}}{2}$
26312	求解x	4(x)=(12(x))/(4+x)	$4 (x) = \frac{12 (x)}{4 + x}$
26313	求解x	4a^2=36	$4 a^{2} = 36$
26314	求解x	4cos(x)^2-7cos(x)-2=0	$4 \cos^{2} (x) - 7 \cos (x) - 2 = 0$
26315	求解x	3x-12y=6	$3 x - 12 y = 6$
26316	求解x	3x-4y=28	$3 x - 4 y = 28$
26317	求解x	6 logaritmo naturale di 8x+9-6=12	$6 \ln (8 x + 9) - 6 = 12$
26318	求解x	-6x+3y=0	$- 6 x + 3 y = 0$
26319	求解x	6y=5x	$6 y = 5 x$
26320	求解x	7m^2=33m	$7 m^{2} = 33 m$
26321	求解x	7sin(x)^2+5cos(x)^2=5+2sin(x)^2	$7 \sin^{2} (x) + 5 \cos^{2} (x) = 5 + 2 \sin^{2} (x)$
26322	求解x	7x^2+18=0	$7 x^{2} + 18 = 0$
26323	求解x	7x^2+6 radice quadrata di 3xy+13y^2-6=0	$7 x^{2} + 6 \sqrt{3} x y + 13 y^{2} - 6 = 0$
26324	求解x	-7=3(x-5)-5x	$- 7 = 3 (x - 5) - 5 x$
26325	求解x	7-6sin(x)=3+2sin(x)	$7 - 6 \sin (x) = 3 + 2 \sin (x)$
26326	求解x	7cos(2t)=3	$7 \cos (2 t) = 3$
26327	求解x	7sin(x)-7cos(2x)=0	$7 \sin (x) - 7 \cos (2 x) = 0$
26328	求解x	7sin(x)=5tan(x)	$7 \sin (x) = 5 \tan (x)$
26329	求解x	7x-(3x-6)=18	$7 x - (3 x - 6) = 18$
26330	求解x	7x+5x-3y+54=180	$7 x + 5 x - 3 y + 54 = 180$
26331	求解x	7x-5y=6	$7 x - 5 y = 6$
26332	求解x	7x-6z=10	$7 x - 6 z = 10$
26333	求解x	8cos(2x)^2+7cos(2x)-1=0	$8 \cos^{2} (2 x) + 7 \cos (2 x) - 1 = 0$
26334	求解x	8 logaritmo in base 9 di -4n=24	$8 \log_{9} (- 4 n) = 24$
26335	求解x	8n^2-16n-17=-7	$8 n^{2} - 16 n - 17 = - 7$
26336	求解x	8sec(x)^2-8=0	$8 \sec^{2} (x) - 8 = 0$
26337	求解x	8sin(x/2)^2-10sin(x/2)+3=0	$8 \sin^{2} (\frac{x}{2}) - 10 \sin (\frac{x}{2}) + 3 = 0$
26338	求解x	8sin(x)^2-4sin(x)=2	$8 \sin^{2} (x) - 4 \sin (x) = 2$
26339	求解x	8 radice quadrata di 2cos(x)+6=-2	$8 \sqrt{2} \cos (x) + 6 = - 2$
26340	求解x	8x^2+80x=-5	$8 x^{2} + 80 x = - 5$
26341	求解x	8sin(2x)-8sin(x)=0	$8 \sin (2 x) - 8 \sin (x) = 0$
26342	求解x	8sin(6x)=7	$8 \sin (6 x) = 7$
26343	求解x	8sin(x)-e^x=1	$8 \sin (x) - e^{x} = 1$
26344	求解x	8sin(x)+4=0	$8 \sin (x) + 4 = 0$
26345	求解x	8tan(x)=-3	$8 \tan (x) = - 3$
26346	求解x	-8u-8=2(-4u-4)	$- 8 u - 8 = 2 (- 4 u - 4)$
26347	求解x	8x-4=x^2+5x-14	$8 x - 4 = x^{2} + 5 x - 14$
26348	求解x	9.76=0.67 logaritmo di 0.37x	$9.76 = 0.67 \log (0.37 x)$
26349	求解x	9(x-4)^2+16(y-3)^2=144	$9 {(x - 4)}^{2} + 16 {(y - 3)}^{2} = 144$
26350	求解x	9sin(x)^2tan(x)=16tan(x)	$9 \sin^{2} (x) \tan (x) = 16 \tan (x)$
26351	求解x	9x^2+25y^2=225	$9 x^{2} + 25 y^{2} = 225$
26352	求解x	5csc(pi/3)cot(pi/6)	$5 \csc (\frac{π}{3}) \cot (\frac{π}{6})$
26353	求解x	5 logaritmo di x+1+10=10 logaritmo di t+1+5	$5 \log (x + 1) + 10 = 10 \log (t + 1) + 5$
26354	求解x	5sin(x)=-3	$5 \sin (x) = - 3$
26355	求解x	5sin(3x)+6cos(3x)=1	$5 \sin (3 x) + 6 \cos (3 x) = 1$
26356	求解x	5sin(x)+2cos(2)-3=0	$5 \sin (x) + 2 \cos (2) - 3 = 0$
26357	求解x	5sin(x)+3=0	$5 \sin (x) + 3 = 0$
26358	求解x	5sin(x-3)=sin(x)	$5 \sin (x - 3) = \sin (x)$
26359	求解x	5tan(x)cos(x)=7cos(x)	$5 \tan (x) \cos (x) = 7 \cos (x)$
26360	求解x	-5x+4y=26	$- 5 x + 4 y = 26$
26361	求解x	5x-16=-86	$5 x - 16 = - 86$
26362	求解x	5y+12=-8/y	$5 y + 12 = - \frac{8}{y}$
26363	求解x	5y=25	$5 y = 25$
26364	求解x	6(4x)=7	$6 (4 x) = 7$
26365	求解x	6*17^(-8x)=79	$6 \cdot 17^{- 8 x} = 79$
26366	求解x	6.3x-6.2=x+21.8	$6.3 x - 6.2 = x + 21.8$
26367	求解x	6arccos(5x)=5pi	$6 \arccos (5 x) = 5 π$
26368	求解x	6 logaritmo in base 4 di 4x+5+2=5	$6 \log_{4} (4 x + 5) + 2 = 5$
26369	求解x	6n^2+6=7n	$6 n^{2} + 6 = 7 n$
26370	求解x	6sin(x)^2+5sin(x)-6=0	$6 \sin^{2} (x) + 5 \sin (x) - 6 = 0$
26371	求解x	6sin(x-3)^2=0	$6 \sin^{2} (x - 3) = 0$
26372	求解x	6sin(x)^2-sin(x)-2=0	$6 \sin^{2} (x) - \sin (x) - 2 = 0$
26373	求解x	6tan(x)^2-18=0	$6 \tan^{2} (x) - 18 = 0$
26374	求解x	6x^2-16x+5=0	$6 x^{2} - 16 x + 5 = 0$
26375	求解x	-6=-6cos(A)	$- 6 = - 6 \cos (A)$
26376	求解x	64=144+49-168cos(x)	$64 = 144 + 49 - 168 \cos (x)$
26377	求解x	cos(-300)	$\cos (- 300)$
26378	求解x	cos(35)=9/x	$\cos (35) = \frac{9}{x}$
26379	求解x	cos(39)=12/x	$\cos (39) = \frac{12}{x}$
26380	求解x	cos(3a+50)=sec(7a-70)	$\cos (3 a + 50) = \sec (7 a - 70)$
26381	求解x	cos(3s)=1/2	$\cos (3 s) = \frac{1}{2}$
26382	求解x	cos(3x)+0.5x=0	$\cos (3 x) + 0.5 x = 0$
26383	求解x	cos(3x) = square root of 3/2	$\cos (3 x) = \sqrt{\frac{3}{2}}$
26384	求解x	cos(3x-pi/3)=( radice quadrata di 2)/2	$\cos (3 x - \frac{π}{3}) = \frac{\sqrt{2}}{2}$
26385	求解x	cos(4x)=-1	$\cos (4 x) = - 1$
26386	求解x	cos(4x-6)=1/(sec(2x+14))	$\cos (4 x - 6) = \frac{1}{\sec (2 x + 14)}$
26387	求解x	cos(42)=70/x	$\cos (42) = \frac{70}{x}$
26388	求解x	cos(43)=8.7/(BC)	$\cos (43) = \frac{8.7}{B C}$
26389	求解x	cos(4x)=0.8x-12	$\cos (4 x) = 0.8 x - 12$
26390	求解x	cos(60)=(2 radice quadrata di 7)/x	$\cos (60) = \frac{2 \sqrt{7}}{x}$
26391	求解x	cos(68)=x/23	$\cos (68) = \frac{x}{23}$
26392	求解x	cos(6x)=0	$\cos (6 x) = 0$
26393	求解x	cos(6y)=cos(3y)^2-sin(3y)^2	$\cos (6 y) = \cos^{2} (3 y) - \sin^{2} (3 y)$
26394	求解x	cos(7x-8x)=cos(7x)cos(8x)+sin(7x)sin(8x)	$\cos (7 x - 8 x) = \cos (7 x) \cos (8 x) + \sin (7 x) \sin (8 x)$
26395	求解x	cos(a)+cos(120-a)+cos(120+a)=0	$\cos (a) + \cos (120 - a) + \cos (120 + a) = 0$
26396	求解x	cos(a)=0.6786925097	$\cos (a) = 0.67869250$
26397	求解x	cos(a-b)=tan(a)=5/12=sin(b)=12/13	$\cos (a - b) = \tan (a) = \frac{5}{12} = \sin (b) = \frac{12}{13}$
26398	求解x	cos(b)=(a^2+c^2-b^2)/(2ac)	$\cos (b) = \frac{a^{2} + c^{2} - b^{2}}{2 a c}$
26399	求解x	cos(t)=1/2	$\cos (t) = \frac{1}{2}$
26400	求解x	cos(t)=5/4	$\cos (t) = \frac{5}{4}$