{"id":6385,"date":"2020-09-23T06:21:55","date_gmt":"2020-09-23T06:21:55","guid":{"rendered":"https:\/\/tnboardsolutions.com\/?p=6385"},"modified":"2021-07-08T03:23:20","modified_gmt":"2021-07-08T08:53:20","slug":"samacheer-kalvi-11th-business-maths-guide-chapter-5-ex-5-7","status":"publish","type":"post","link":"https:\/\/tnboardsolutions.com\/samacheer-kalvi-11th-business-maths-guide-chapter-5-ex-5-7\/","title":{"rendered":"Samacheer Kalvi 11th Business Maths Guide Chapter 5 Differential Calculus Ex 5.7"},"content":{"rendered":"

Students can download 11th Business Maths Chapter 5 Differential Calculus Ex 5.7 Questions and Answers, Notes, Samcheer Kalvi 11th Business Maths Guide<\/a>\u00a0Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.<\/p>\n

Tamilnadu Samacheer Kalvi 11th Business Maths Solutions Chapter 5 Differential Calculus Ex 5.7<\/h2>\n

Samacheer Kalvi 11th Business Maths Differential Calculus Ex 5.7 Text Book Back Questions and Answers<\/h3>\n

Question 1.
\nDifferentiate the following with respect to x.
\n(i) xsin x<\/sup>
\n(ii) (sin x)x<\/sup>
\n(iii) (sin x)tan x<\/sup>
\n(iv) \\(\\sqrt{\\frac{(x-1)(x-2)}{(x-3)\\left(x^{2}+x+1\\right)}}\\)
\nSolution:
\n(i) Let y = xsin x<\/sup>
\nTaking logarithm on both sides we get,
\nlog y = log(xsin x<\/sup>)
\nlog y = sin x log x
\nDifferentiating with respect to x,
\n\"Samacheer<\/p>\n

(ii) Let y = (sin x)x<\/sup>
\nTaking logarithm on both sides we get,
\nlog y = x log(sin x)
\nDifferentiating with respect to x,
\n\\(\\frac{1}{y} \\cdot \\frac{d y}{d x}\\) = x \\(\\frac{d}{d x}\\) log(sin x) + log(sin x) \\(\\frac{d}{d x}\\) (x)
\n\\(\\frac{1}{y} \\cdot \\frac{d y}{d x}\\) = x \\(\\frac{1}{\\sin x}\\) (cos x) + log(sin x) (1)
\n\\(\\frac{1}{y} \\cdot \\frac{d y}{d x}\\) = x cot x + log(sin x)
\n\\(\\frac{d y}{d x}\\) = y[x cot x + log(sin x)]
\n\\(\\frac{d y}{d x}\\) = (sin x)x<\/sup> [x cot x + log(sin x)]<\/p>\n

\"Samacheer<\/p>\n

(iii) Let y = (sin x)tan x<\/sup>
\nTaking logarithm on both sides we get,
\nlog y = tan x log(sin x)
\nDifferentiating with respect to x,
\n\"Samacheer<\/p>\n

(iv) Let y = \\(\\sqrt{\\frac{(x-1)(x-2)}{(x-3)\\left(x^{2}+x+1\\right)}}\\)
\ny = \\(\\left(\\frac{(x-1)(x-2)}{(x-3)\\left(x^{2}+x+1\\right)}\\right)^{\\frac{1}{2}}\\)
\nTaking logarithm on both sides we get,
\nlog y = \\(\\frac{1}{2}\\) {[log(x – 1) + log(x – 2)] – [(log(x – 3) + log(x2<\/sup> + x + 1)]}
\nlog y = \\(\\frac{1}{2}\\) [log(x – 1) + log(x – 2) – log(x – 3) – log(x2<\/sup> + x + 1)]
\nDifferentiating with respect to x,
\n\"Samacheer<\/p>\n

\"Samacheer<\/p>\n

Question 2.
\nIf xm<\/sup> . yn<\/sup> = (x + y)m+n<\/sup>, then show that \\(\\frac{d y}{d x}=\\frac{y}{x}\\)
\nSolution:
\nxm<\/sup> . yn<\/sup> = (x + y)m+n<\/sup>
\nTaking logarithm on both sides we get,
\nm log x + n log y = (m + n) log(x + y)
\nDifferentiating with respect to x,
\n\"Samacheer
\nHence proved.<\/p>\n","protected":false},"excerpt":{"rendered":"

Students can download 11th Business Maths Chapter 5 Differential Calculus Ex 5.7 Questions and Answers, Notes, Samcheer Kalvi 11th Business Maths Guide\u00a0Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams. Tamilnadu Samacheer Kalvi 11th Business Maths Solutions Chapter 5 …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[6],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/posts\/6385"}],"collection":[{"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/comments?post=6385"}],"version-history":[{"count":0,"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/posts\/6385\/revisions"}],"wp:attachment":[{"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/media?parent=6385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/categories?post=6385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tnboardsolutions.com\/wp-json\/wp\/v2\/tags?post=6385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}