1. If 2x+2y=2x+y,thevalueofdydxatx=1,y−1is
2. If sec(x+yx−y)=athendydxis
3. If y=log(smx) thend2ydx2equals
4. Derivative of sec−1(12x2−1)withrespectto1−x2 at x=12is
5. The derivative of f(x)=|x|atx=0is
6. If y=a+bx2,a,barbitraryconstants,then
7. If x=t2y=t3thend2ydx2
8. If y=axn+1+bx−nthenx2d2ydx2=
9. If f(x+y)=f(x) f(y) for all x and y and f(5) =2, f1(a)=3thanf1(5)is
10. If y = x+x+x+x+...∝thendydxisequal
11. Given f(x) =4x8then
12. Let f and g be differentiable functions satisfying g1(a)=2,g(a)=bandfog=1 identity function).Thenf1(b)isequalto
13. Let y = a Sin(mx)+b cos mx then d2ydx2isequalto
14. ddxSin−1(2x1−x2)is
15. Differential co-efficient of log10xwithrespecttolog10xis
16. If x+y=4thendxdyaty=1is
17. Derivative of tan−1(sinx+cosxcosx−Sinx)withrespecttoxis
18. If xy=ex−ythendydxisequalto
19. ddx(cos−1x+Sin−1x)is
20. If y = xx,x>0thendydxis