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# Free Precalculus Help, Precalculus Problems Answers

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Solution: f(x) sin x. (1) f(x h) sin (x h).(2 subtract equation (1) from equation (2 we get f(x h) - f(x) sin(x h) - sin x 2 cos ( frac2xh2 ) sin ( frach2 )   using identity sin A - sin B 2 cos( fracAB2 ) sin ( fracA-B2 ) 2 cos (x frach2 ) sin ( frach2. They can choose their sub-topics and can take sessions at any preferred time. Moreover, they can take assistance in solving assessments and homework from our efficient online tutors. Get personalized attention and solve complicated calculus problems with experienced Math tutors and understand all these topics in a detailed manner. Top, calculus is the study of change, it basically analyses things that change and is a significant part  of Mathematics. Calculus is a branch of mathematics focused on limits, integrals, derivatives, functions and infinite series. Question 2: Solve int fraclog xx dx Solution: Given: int fraclog xx dx Substitute log x t, then frac1x dx dt Now int fraclog xx dx int t dt fract22 After re-substituting the values, we have frac(log x)22 Related Topics Math Help Online Online Math Tutor. In short, get well-geared learning help online. Calculus homework help is designed and prepared under the supervision of proficient academicians. Students can get calculus homework help at their convenient time and make their learning process easier and worthy. Some essential topics are mentioned below and these are thoroughly covered by our online program: Functions Limits and Continuity, differentiation, differential Equations, indefinite Integrals, definite Integrals. Applications of Derivatives, exponential and Logarithmic Series, get personalized attention and solve complicated calculus problems with experienced Math tutors and understand all these topics in a detailed manner.