2 sin x 2 cos x

Please ensure that your password is at least 8 characters and contains each of the following:. Enter a problem Calculus Examples Popular Problems. Find the second derivative.

Please ensure that your password is at least 8 characters and contains each of the following:. Enter a problem Calculus Examples Popular Problems. Divide each term in the equation by. Cancel the common factor of. Cancel the common factor. Divide by.

2 sin x 2 cos x

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The period of the function is so values will repeat every radians in both directions. The tangent function is negative in the second and fourth quadrants.

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Solve Practice Play. Game Central. Greatest Common Factor. Least Common Multiple. Order of Operations. Mixed Fractions. Prime Factorization.

2 sin x 2 cos x

If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Search for courses, skills, and videos. Using trigonometric identities. About About this video Transcript. Created by Sal Khan.

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Cancel the common factor of. An inflection point is a point on a curve at which the concavity changes sign from plus to minus or from minus to plus. Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Set the second derivative equal to. Cancel the common factor. Combine and. The period of the function is so values will repeat every radians in both directions. The absolute value is the distance between a number and zero. Simplify the expression to find the second solution. Combine the numerators over the common denominator. Please ensure that your password is at least 8 characters and contains each of the following:. Divide each term in by and simplify. The exact value of is.

In mathematics, an "identity" is an equation which is always true, regardless of the specific value of a given variable. Need a custom math course?

Simplify the left side. The tangent function is negative in the second and fourth quadrants. Substitute a value from the interval into the second derivative to determine if it is increasing or decreasing. Cancel the common factor. Cancel the common factor. Calculus Examples Popular Problems. Simplify the numerator. To write as a fraction with a common denominator , multiply by. Divide by. Find the first derivative.