Trig & Precalculus Office Hours w/ @blackpenredpen - We're Live, Ask Away! @blackpenredpen

Uploaded February 2025 | Updated September 2026, 1 week ago

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Chegg is hosting live office hours every week! Schedule is on our YouTube community page and stay connected with us here: che.gg/3E2AZRw

📐 Join us for Trigonometry Office Hours! Get expert help understanding sine, cosine, tangent, and their applications. Whether you're working with right triangles, solving trigonometric equations, graphing periodic functions, or exploring identities, our experienced instructors will help you master these fundamental concepts.

Bring your questions about SOHCAHTOA, Unit Circle, Inverse Trig Functions, Law of Sines, Law of Cosines, Double Angle Formulas, Radian Measure, Polar Coordinates, and more! Perfect for MATH142 students, pre-calculus students, and anyone wanting to strengthen their understanding of angular relationships and periodic functions.

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Trig & Precalculus Office Hours w/ @blackpenredpen - Were Live, Ask Away!

Math for fun: solving (4^x+8)^4-(8^x-4)^4=(4+8^x+4^x)^4

Pythagorean Theorem & Its Inverse (my favorite proof)

The most fun way of solving this quartic equation

Solving an AIME functional equation (how do we guess a solution)

$100 integrals part 2 (EXTREME PASSION!) 100 integrals part 2! Including integration by parts, u-substitution, trig substitution, partial fraction decomposition, reverse power rule for integrals, integral reduction formulas, Weierstrass substitution, improper integrals, special functions, Feynmans technique of integration, integration with power series, the Gaussian Integral, double integrals, Jacobian, polar coordinate, change the order of integration, and more! Get the file & answer key on my Patreon 👉 https://www.patreon.com/posts/102752235 100 integrals (original) 👉 https://youtu.be/dgm4-3-Iv3s Thanks to Nathaniel Barnett for the time stamps! 0:00 100 integrals part 2! Q1, 0:00:46 integral of 2022 Q2, 0:03:03 integral by trig identities and u-sub Q3, 0:08:23 integral by trig sub Q4, 0:12:34 integral by u-sub and integration by parts Q5, 0:17:02 Q6, 0:19:42 Q7, 0:30:07 Q8, 0:33:45 Q9, 0:37:58 Q10, 0:45:16 Q11, 0:48:30 Q12, 0:53:16 Q13, 0:59:06 Q14, 0:58:34 Q15, 1:00:41 Q16, 1:04:56 Q17, 1:07:27 Q18, 1:12:27 Q19, 1:14:42 Q20, 1:18:50 Q21, 1:22:30 integral of x^n*e^x Q22, 1:25:14 integral of (ln(x))^n Q23, 1:27:40 integral of sin^n(x) Q24, 1:37:44 integral of tan^n(x) Q25, 1:42:58 integral of sec^n(x) Q26, 1:52:14 Q27, 1:54:45 Q28, 1:57:45 Q29, 2:01:49 Q30, 2:04:49 Q31, 2:24:38 integral of sec(x) by Weierstrass Substitution Q32, 2:27:17 Q33, 2:31:25 Q34, 2:35:00 Q35, 2:37:20 Q36, 2:42:02 Q37, 2:44:24 Q38, 2:50:18 Q39, 2:51:53 Q40, 2:56:12 Q41, 3:00:21 Q42, 3:04:07 Q43, 3:06:45 Q44, 3:11:58 Q45, 3:19:02 Q46, 3:24:19 Q47, 3:28:36 Q48, 3:31:54 Q49, 3:33:44 Q50, 3:43:40 Q51, 3:49:16 Q52, 3:55:44 Q53, 3:59:50 Q54, 4:03:18 integral of x/(1+e^x) Q55, 4:08:21 integral of e^x/(1+x) Q56, 4:09:21 integral of e^e^x Q57, 4:10:27 integral of ln(ln(x)) Q58, 4:12:40 Q59, 4:14:28 Q60, 4:19:48 integral of the Lambert W function Q61, 4:25:39 improper integral of 1/x^p from 1 to inf Q62, 4:28:52 Q63, 4:29:32 Q64, 4:32:55 Q65, 4:35:29 the Gaussian Integral Q66, 4:50:04 Q67, 4:55:42 Q68, 4:58:36 integral of ln(x) from 0 to 1 Q69, 5:02:56 Q70, 5:10:32 Q71, 5:13:24 integral of ln(x)/(x-1) from 0 to 1 Q72, 5:21:08 integral of (x-1)/ln(x) from 0 to 1 Q73, 5:28:08 integral by symmetry Q74, 5:34:14 integral by even and odd function properties Q75, 5:43:16 Q76, 5:51:17 Q77, 5:52:58 Q78, 6:00:28 the Dirichlet integral, the integral of sin(x)/x from 0 to inf Q79, 6:08:10 Q80, 6:13:28 Q81, 6:37:48 double integral & change the order of integration Q82, 6:45:45 Q83, 6:49:24 Q84, 6:54:00 Q85, 6:57:25 Q86, 7:03:50 Q87, 7:07:33 Q88, 7:11:11 Q89, 7:17:27 Q90, 7:21:37 Q91, 7:28:52 Q92, 7:37:47 Q93, 7:55:15 Q94, 8:07:00 Q95, 8:10:24 Q96, 8:21:05 Q97, 8:22:55 Q98, 8:26: 30 Q99, 8:29: 59 Q100, 8:33:33 Q101, 8:38:32 the BIG integral from the Berkeley Math Tournament$

This is how HKDSE asked a logarithm question (Hong Kong university entrance exam)